What is the main function of a car engine?

A car engine is a drive unit that converts fuel energy into mechanical motion, enabling the vehicle to move.

How does the engine timing system work?

It synchronizes the operation of the crankshaft with the camshafts, controlling the opening and closing of the valves.

What does the engine symbol mean, e.g. N55 or DW10C?

This designation indicates the design version, specifying parameters, capacity, type of accessories and compatibility with parts.

How do I choose parts for my engine?

It is best to match parts according to the engine designation (e.g. N55, 2.0 TDCi, 1.9 TDI) and vehicle model.

Do engine parts differ between versions of one model?

Yes - one generation of a car may have several engine variants differing in power, equipment and parameters.

Which engines are the most durable?

The 1.9 TDI, DW10C and six-cylinder BMWs, e.g. N55, are considered durable.

Can parts be used between different car models?

Yes, if they have compatible parameters and identical specifications - e.g. DW10C injectors fit Ford, Peugeot and Citroën.

Engines and parts

A wide selection of original, used engine parts for vehicles from leading brands such as BMW, Mini, Mercedes, Audi, Volkswagen, Seat, Skoda, Ford and many others, including niche brands.

More information

Make

Category

Subcategory

Condition

In Stock

Price

Fuel type

Gearbox type

Number of cylinders

Products in promotion

Part no. 1848051-1

Ford Transit Connect 1.8 TDCi 75HP Complete Engine R2PA TCD FGT WARRANTY

Product currently unavailable

Part no. A1110106198

Mercedes W203 S203 C180 129HP Bare Engine 111.951 111951 with 83k miles WARRANTY

Product currently unavailable

Part no. 045100033C-1

VW Volkswagen Polo 9N 1.4 TDI 80HP Complete Engine BMS with 95k miles, WARRANTY

Product currently unavailable

Part no. 7548196

BMW E60 LCI E90 E91 325i 330i 525i 530i Engine Cylinder Head Cover

Product currently unavailable

Part no. 7L6199308B

Audi Q7 4L 3.0 TDI BUG Diesel Engine Bracket Support Mount Right O/S 7L6199308B

Product currently unavailable

Part no. 7354384

Pump AdBlue BMW G30 G14 G15 F15 SCR System AdBlue Tank Transfer Pump 7354384

Product currently unavailable

Part no. 038115105C

Oil Pump Volkswagen Audi Seat Skoda 1.9 Tdi BXE Engine Lubrication 038115105C

Product currently unavailable

Part no. 9805940

Crankshaft Position Sensor Volkswagen VW Passat B6 1.9 TDI Engine Block 9805940

Product currently unavailable

Part no. 2355858-2

BMW X5 F15 X6 F16 M50dX Bare Engine N57X N57D30C 381HP New Timing WARRANTY

Product currently unavailable

Part no. 8510115-1

BMW 1 3 4 Series F20 F21 F30 F31 F32 N47N Engine Acoustic Cover Housing 8510115

Product currently unavailable

Part no. 8V211568AA

Ford Puncture Tyre Sealant Sealer Tirefit Container 8V211568AA

Product currently unavailable

Part no. 7298942

Mini F55 F56 Sealing Seal Side Frame Panel Right O/S Cover 7298942

Product currently unavailable

Part no. 0135QF-1

Peugeot 207 307 308 1.6 HDI Complete Engine 9H02 DV6ATED4 WARRANTY

Product currently unavailable

Part no. 6784830

BMW X3 F25 X4 F26 N57N N57Z Engine Mount Right O/S Holder Bracket 6784830

Product currently unavailable

Part no. 2473086

BMW F45 F46 218d X1 F48 X2 F39 18d 18dX B47 Bare Engine B47C20A 95k, WARRANTY

Product currently unavailable

Part no. 7801697

BMW X5 X6 E70 3.0sd 3.5d E71 35dX M57N2 Oil Filler Neck Cylinder Head 7801697

Product currently unavailable

Part no. 059109009DC-1

Audi Q5 8R A5 8T 3.0 TDI Engine Inlet Intake Camshaft 059109009DC

Product currently unavailable

Part no. 04E906455AC

VW Golf SV Audi A3 8V 1.5 TSI TFSI Camshaft Solenoid Control Valve 04E906455AC

Product currently unavailable

Part no. 2223051

BMW F10 F10N F11 530d N57N 258HP Bare Engine N57D30A with 69k miles, WARRANTY

Product currently unavailable

Part no. 8200825703

Nissan Qashqai J10 Oil Dipstick Engine Oil Level Guide Tube 8200825703

Product currently unavailable

Part no. 7019802

Engine Cover BMW F01 F02 Acoustic Bay Support Panel Right O/S 7019802

Product currently unavailable

Part no. 130C01377R

Mercedes W177 OM608 Diesel Engine Cover Rocker Panelling 130C01377R

Product currently unavailable

Part no. 0135QY-1

Peugeot 3008 1.6 HDi Complete Engine Diesel DV6C 9H05 with 74k miles, WARRANTY

Product currently unavailable

Part no. 7792099

BMW E60 E61 525d Diesel M57N 256D2 Engine Piston Rod Conrod

Product currently unavailable

Part no. A2710100867-1

Engine Cover Mercedes W203 W204 W209 M271 Petrol Top Acoustic Panel A2710100867

Product currently unavailable

Part no. 2282029

BMW 5 6 Series E60 E61N E63 E64 Bracket Holder Oil Carrier 2282029

Product currently unavailable

Part no. 6R0423845

Volkswagen Polo 6R Power Steering Pump Mount Bearing Bracket 6R0423845

Product currently unavailable

Part no. A1662230404

Mercedes-Benz A-Class W168 M166 Engine Mount Bracket A1662230404

Product currently unavailable

Part no. 1848047-1

Ford Transit Connect I Complete Engine 1.8 TDCi D18TC HCPA HCPB 90HP WARRANTY

Product currently unavailable

Part no. 7791579

BMW E90 325d 330d 335d M57N2 Inlet Intake Camshaft Engine Valve Train 7791579

Product currently unavailable

Part no. 7154546

Oil Holder BMW E82 E88 E90 E91 E92 E93 Bracket Carrier 7154546

Product currently unavailable

Part no. 37510-PWE-G01

Honda Jazz 1.2 Petrol Engine Camshaft Position Sensor 37510-PWE-G01

Product currently unavailable

Part no. A6560107200

Mercedes C167 W213 C238 C257 4MATIC Bare Engine 656929 656.929 59k, WARRANTY

Product currently unavailable

Part no. 036100038L

VW Volkswagen Polo 6R Seat Ibiza 4 1.4 Petrol Bare Engine CGGB 65k, WARRANTY

Product currently unavailable

Part no. 03P199206

VW Polo MK5 6R 1.2 TDI Diesel Engine Mount Bracket Right O/S Holder 03P199206

Product currently unavailable

Part no. 05E100098E

VW Golf Mk7 Mk8 Seat Leon 5F Bare Engine DPBA 1.5 TSI 130HP 75k miles, WARRANTY

Product currently unavailable

Part no. A2740106503

Mercedes W204 W205 C 180 Bare Engine 274.910 274910 with 49k miles, WARRANTY

Product currently unavailable

Part no. 059109021DS-1

Audi Q5 8R A5 8T Engine Inlet Intake Camshaft 3.0 TDI 059109021DS

Product currently unavailable

Part no. 06H109022BA

Audi VW Seat Skoda 1.8 TFSI Petrol Camshaft Outlet Exhaust Housing 1-4 Cyl

Product currently unavailable

Part no. A6540788500

Mercedes-Benz W204 Engine Fuel Lines Shield A6540788500

Product currently unavailable

Part no. 045109145H

Volkswagen Golf V 1.9 TDI BXE Timing Belt Cover 045109145H

Product currently unavailable

Part no. A2740100167

Engine Cover Mercedes R172 W205 W213 W212 W253 Petrol M274 A2740100167

Product currently unavailable

Part no. A6510100230

Mercedes W639 W906 Diesel OM651 Engine Cover Head Rocker Panel A6510100230

Product currently unavailable

Part no. 68021647AA

Jeep Commander XH Grand Cherokee WH 3.0 V6 CRD OM642 Bare Engine EXL WARRANTY

Product currently unavailable

Part no. 6774826

BMW 5 SERIES e60 e61 Front right O/S tension strut wishbone control arm

Product currently unavailable

Part no. DS7Q6303AA

Crankshaft Ford Mondeo MK4 S-Max 2.0 TDCi Diesel Engine DS7Q-6303-AA 30725011

Product currently unavailable

Part no. 7505188

BMW X5 E53 3.0i Petrol M54 231HP Bare Engine 306S3 73k miles, WARRANTY

Product currently unavailable

Part no. A6461550735

Mercedes W906 OM646 Alternator To Timing Case Mounting Bracket A6461550735

Product currently unavailable

Part no. A2700104303

Mercedes C117 W176 W246 M270 Petrol Engine Oil Separator Breather A2700104303

Product currently unavailable

Part no. 1432578-1

BMW E39 523i Petrol M52 170HP Complete Engine 256S4 with 109k miles, WARRANTY

Product currently unavailable

Part no. 7797998-1

Dipstick BMW E90 E81 E82 E88 E92 Engine N47 Oil Level Dipstick Tube 7797998

Product currently unavailable

Part no. 1613251280

Citroen Relay Peugeot Boxer 2.0 HDi Bare Engine AHN DW10FUD 130HP WARRANTY

Product currently unavailable

Part no. 8507697

BMW F10 F20 F21 F30 F31 N47N Oil Filter Housing Diesel 8507697

Product currently unavailable

Part no. 1702857

BMW 5 X5 Series E39 E53 Cylinder Head Cover Engine Covering Left N/S 1702857

Product currently unavailable

Part no. 1699880-1

Ford Fiesta 1.6 TDCi MK7 CB1 Complete Engine 9HX DV6ATED4 with 79k, WARRANTY

Product currently unavailable

Part no. p0419084

BMW E46 320d 320Cd Diesel M47N 150HP Bare Engine 204D4 with 99k miles, WARRANTY

Product currently unavailable

Part no. 7508003

BMW E81 E87 E90 E91 Diesel Oil Pan Sump Level Sensor Indicator 7508003

Product currently unavailable

Part no. 0404479-3

BMW E90 320si N45 173HP Complete Engine N45B20A New Timing Installed WARRANTY

Product currently unavailable

Part no. 8201633959-1

Renault Trafic 3 Vauxhall Vivaro B 1.6 dCi CDTi Complete Engine R9M 450 WARRANTY

Product currently unavailable

Part no. 6G9N-4H473-CC

Land Rover Freelander 2 Engine Mount Bracket Driveshaft Support 6G9N-4H473-CC

Product currently unavailable

Part no. 8513453

Engine Cover BMW F10 F12 535d 640d N57Z Acoustic Insulation Trim Panel 8513453

Product currently unavailable

Part no. A2602230000

Mercedes W177 W247 M260 Engine Mount Driveshaft Holder Support A2602230000

Product currently unavailable

Part no. F1FQ-10K018-BA

Ford Transit Courier 1.5 TDCi Alternator Bracket Mount F1FQ-10K018-BA

Product currently unavailable

Part no. A6400101113

Mercedes W245 W169 Diesel Engine OM640 Engine Oil Pan A6400101113

Product currently unavailable

Part no. 06H115610B

Audi A5 8T 2.0 TFSI CDNC Oil Dipstick Tube Assembly 06H115610B

Product currently unavailable

Part no. 93860700

Engine Mount Renault Trafic Vauxhall Vivaro Rear Bracket Support 93860700

Product currently unavailable

Part no. 6776286

BMW 5 6 SERIES E60 E61 E63 E64 RIGHT ENGINE MOUNT SUPPORT O/S 6770940 6776286

Product currently unavailable

Part no. 0415402-1

BMW E90 E91 Complete Engine 325i Petrol N52 218HP N52B25A 72k miles, WARRANTY

Product currently unavailable

Part no. A1020100472

Mercedes W124 M102 M103 Oil Dipstick Engine Oil Level Guide Tube Red A1020100472

Product currently unavailable

Part no. A6510100528

Mercedes W204 W212 OM651 Diesel Engine Plastic Oil Sump Pan A6510100528

Product currently unavailable

Part no. 045199207H

VW Polo 9N MK4 Fabia II 1.4 TDI BMS Engine Mount Bracket Right O/S 045199207H

Product currently unavailable

Part no. 3400341-1

Engine Mount BMW X3 E83 2.0d M47N2 Left N/S Rubber Mounting 3400341

Product currently unavailable

Part no. 7792939

BMW E60 E61 535d M57N Diesel Engine Cylinder Head Rocker Cover Panel 7792914

Product currently unavailable

Part no. A6450900041-1

Mercedes W176 Engine Bay Front Air Filter Housing Bracket Mount A6450900041

Product currently unavailable

Part no. 074100091EX

VW Volkswagen LT 35 2.5 TDI Bare Engine BBF 95HP 119 000 miles, WARRANTY

Product currently unavailable

Part no. A1130104402

Mercedes W211 C219 E CLS 500 Bare Engine 113967 113.967 306HP 99k, WARRANTY

Product currently unavailable

Part no. 55562522

Engine Cover Saab 9-3 1.9 TTiD Diesel Engine Top Acoustic Trim Panel 55562522

Product currently unavailable

Part no. 8591633

BMW E90 LCI E92 E93 F30 F31 F32 F33 F10 Diesel Timing Chain Cover 8591633

Product currently unavailable

Part no. 6792863

BMW 1 Series E82 E88 Toolkit Tool Storage Tray Mobility System 6792863

Product currently unavailable

Part no. 7551627

BMW X5 E70 4.8i N62N Petrol Engine Oil Sump Pan Upper Part 7551627

Product currently unavailable

Part no. 045100033C

VW Polo 9N Seat Ibiza 3 4 Skoda Fabia 2 1.4 TDI 80HP Bare Engine BMS WARRANTY

Product currently unavailable

Part no. 1782109-1

Ford Transit Custom 2.2 TDCI Complete Engine CYF4 CYFF 125HP 99k miles, WARRANTY

Product currently unavailable

Part no. 6C1Q-6K537-AB

Ford Transit Mk7 2.2 TDCI Cylinder Head Camshaft Housing Carrier 6C1Q6K537AB

Product currently unavailable

Part no. 079103925L

Audi A5 S5 8T 4.2 V8 FSI CAUA Petrol Engine Front Cover Panel 079103925L

Product currently unavailable

Part no. 6767228-1

BMW E65 Oil Sump Cover Under Engine Covering Reinforcement Plate 6767228

Product currently unavailable

Part no. A6990103000-1

Mercedes W470 X470 250 d Complete Engine 699303 699.303 190HP 29k, WARRANTY

Product currently unavailable

Part no. 06K100039B

Audi S3 8V VW Golf Mk7 R 2.0 TFSI Quattro Bare Engine DNUE 300HP 79k, WARRANTY

Product currently unavailable

Part no. 6761117

BMW 5 6 Series E60 E61 E63 Engine Support Bracket Mount Holder Left N/S 6761117

Product currently unavailable

Part no. AH226037BA

Engine Mount Land Rover Range L320 3.0d Right O/S Support Holder AH22-6037-BA

Product currently unavailable

Part no. 8486549

Crankshaft Sensor BMW F40 F45 X1 F48 Mini F54 F55 F56 F60 Speed Sensor 8486549

Product currently unavailable

Part no. 7574373

BMW F10 M5 F12 M6 Timing Chain Guide Lower Timing Case Rail 7574373

Product currently unavailable

Part no. A1692400618

Mercedes-Benz A B Class W169 W245 Rear Right O/S Engine Mount A1692400618

Product currently unavailable

Part no. 059100031J-3

VW Volkswagen Touareg 7L 3.0 TDI Complete Engine BKS 225HP 99k miles, WARRANTY

Product currently unavailable

Part no. A2700102801

Engine Cover Mercedes C117 X156 W176 Petrol OM270 Engine Insulation A2700102801

Product currently unavailable

Part no. A6420107107

Mercedes ML W166 GL X166 C292 350 Bare Engine 642.826 642826 79k miles, WARRANTY

Product currently unavailable

Part no. A2462410221

Mercedes W176 W246 Gearbox Support Mount Bracket Holder A2462410221

Product currently unavailable

Part no. 1743452

BMW 3 Series E36 316i Petrol M43 102HP Bare Engine M43B16 164E2 WARRANTY

Product currently unavailable

Part no. 7638639

BMW F10 M5 F13 M6 S63N Engine Cylinder Head Rocker Cover Panel Cyl 1-4 7843506

Product currently unavailable

Part no. 03L103925K

Skoda Fabia 5J Engine Cover Insulation Acoustic Trim Panel 1.6 TDI 03L103925K

Product currently unavailable

...

Showing 4357-4455 of 6097 products

Engines and parts – comprehensive offer for your car

Original, used engines and engine components for popular brands

Car Engines and Parts: The Heart of Your Vehicle

Car engines are a key component of every vehicle, responsible for its performance, efficiency, and reliability. Alongside them, engine parts play a crucial role, ensuring the proper operation of the engine. At Global Parts, you'll find a wide selection of used car parts. for engines, perfectly matched to the brands BMW , Audi , Mercedes , Volkswagen , Mini and others. A car engine is a set of mechanisms that convert the chemical energy of fuel into mechanical energy that drives the vehicle's wheels. In practice, this means the operation of hundreds of interacting components, such as pistons, a crankshaft, and a cylinder head. Particularly popular engines on the market include the N55 engine used in BMW (300–326 hp), the economical DW10C engine installed in Peugeot, Citroën, and Ford, and high-strength designs like the Mondeo MK4 2.0 engine . The A4 B8 1.8 and 2.0 TFSI engines are very popular among Audi owners, as is the classic Passat B5 1.9 TDI engine, known for its excellent power-to-fuel ratio.

What components are included in car engines and parts?

Automotive engines and parts are a broad category of components that impact the durability, efficiency, and performance of the drivetrain. Key elements include:

Oil pumps and parts – They are responsible for proper engine lubrication, which prevents overheating and wear of its components.
Engine blocks – The foundation of the engine structure, housing the cylinders and other key components.
Engines – Comprehensive drive units that can be replaced in case of serious damage.
Crankshafts – Key to transmitting energy generated in the combustion process to drive systems.
Engine heads – They contain valves, camshafts and combustion chambers, ensuring proper air and fuel flow.
Engine, main and crank bearings – They ensure smooth and safe movement of the crankshaft and pistons.
Oil drain and filler plugs and dipsticks – They make it easier to check the oil level and change it.
Pistons and rings – Key elements of the combustion process that compress the fuel-air mixture and transfer energy to the crankshaft.
Oil filters – They protect the engine against contamination in the lubrication system.
Oil pans – Store oil and ensure its even distribution throughout the engine.
Engine mounts – They minimize vibrations and noise, ensuring engine stability during operation.
Inspection kits – Parts kits that facilitate regular engine maintenance.
Connecting rods and parts – They are responsible for transferring the movement of the pistons to the crankshaft.
Engine sensors and switches – They monitor engine operation, providing key information to the controllers.
Seals and mounting parts – They ensure tightness and proper connection of engine components.
Chains, timing belts and mounting kits – Crucial for synchronizing the operation of the camshafts and crankshaft.
Timing parts – Shafts, gears and tensioners, which are responsible for the proper opening and closing of valves. Each of these components plays an important role in the operation of the engine, and their efficiency affects the vehicle's reliability. For a given component to be fully compatible with the drive unit, it must be matched to the engine generation, displacement, cylinder layout, and manufacturer's model designation (e.g., N55, DW10C, BKC, AVF). Matching a part to a BMW E90 or BMW E60 also requires considering the design differences between the 150, 163, or 177 hp versions. This ensures that the crankshaft, pistons, and sensors operate within the parameters specified by the manufacturer.

Compatibility table

The table below shows an example of the compatibility of selected engines:

Engine model	Capacity	Power	Fuel type	Sample models	Parts Compatibility
N55 (BMW)	3.0	300–326 hp	Gas	BMW E90, E92, F30	High compatibility of oil pumps and ignition coils
DW10C (PSA/Ford)	2.0	150 hp	Diesel	Mondeo MK4, Peugeot 508	Head and injector compatibility
1.9 TDI (Passat B5)	1.9	90–131 hp	Diesel	Passat B5, Audi A4 B5	Wide interchangeability of turbines and injectors
2.0 TFSI (A4 B8)	2.0	180–211 hp	Gas	Audi A4 B8, A5	High valve train compliance

Why is it worth taking care of car engines and their parts?

Regular maintenance and replacement of worn engine components and parts is essential for long-term, reliable vehicle operation. Neglecting these components can lead to:

Decreased performance and increased fuel consumption.
Damage to key components such as crankshafts and pistons.
Engine overheating and serious breakdowns. At Global Parts we offer genuine used car parts , which undergo detailed quality tests, ensuring their full functionality. A regularly serviced engine can operate trouble-free for up to 300,000–500,000 km, depending on its design and driving conditions. Engines like the 1.9 TDI in the Passat B5 are renowned for mileage exceeding 500,000 km, while modern petrol engines, such as the N55, can practically reach 250,000–350,000 km with the correct selection and replacement of components. Maintaining oil filtration, system tightness, and proper timing operation directly impacts cooling, combustion, and engine performance.

How to choose the right engine parts?

When choosing car engines and parts, such as pistons, heads or oil pumps, it is worth paying attention to:

Vehicle-specific fit – Each car make and model requires specific technical solutions. At Global Parts, you'll find components perfectly suited to BMW , Audi , Mercedes , Volkswagen , Mini, and more.
Technical condition – Make sure parts are free from damage, corrosion and cracks.
Service History – When it comes to engines or larger components such as engine blocks, it is important to know their history. When selecting components for engines like the BMW E60 3.0, Audi A4 B8 2.0 TFSI, or Mondeo MK4 2.0 TDCi, it's crucial to match the components to the engine version numbering and a range of parameters—for example, piston diameter (84–90 mm), oil pump operating pressure, or timing belt tensioner type. This ensures that the individual parts work together under optimal conditions, maintaining the correct torque and engine efficiency.

Why choose used engine parts?

Used car parts are a great solution that allows you to save money without compromising quality. Choosing used engines and engine parts, you gain:

Lower costs – Used items are much cheaper than new ones, but offer just as high quality.
Ecology – You support recycling and reduce the amount of automotive waste.
A wide range – In our store you will find components for the most popular car brands.

How to take care of the engine and its parts?

To keep your car engine running reliably for a long time, it is worth remembering a few rules:

Change your engine oil and oil filters regularly to avoid excessive wear.
Ensure the timing system is working properly by checking the condition of belts and chains.
Check the oil level and quality using the dipsticks and drain plugs.
Replace gaskets and seals to prevent leaks. If you need to replace yours, you'll find the right used car parts at Global Parts. that will restore your vehicle to full working order. For popular diesel engines like the DW10C, 1.9 TDI, or 2.0 TDCi, changing the oil every 10,000–15,000 km significantly extends the life of the turbocharger and crankshaft. In petrol engines, like the N55, special attention should be paid to the cooling system—the coolant pump and thermostat should be maintained in full working order to ensure the engine operates within the 90–105°C range, as specified by the manufacturer.

FAQ - Frequently asked questions about car engines and parts

Question	Answer
What is the main function of a car engine?	A car engine is a drive unit that converts fuel energy into mechanical motion, enabling the vehicle to move.
How does the engine timing system work?	It synchronizes the operation of the crankshaft with the camshafts, controlling the opening and closing of the valves.
What does the engine symbol mean, e.g. N55 or DW10C?	This designation indicates the design version, specifying parameters, capacity, type of accessories and compatibility with parts.
How do I choose parts for my engine?	It is best to match parts according to the engine designation (e.g. N55, 2.0 TDCi, 1.9 TDI) and vehicle model.
Do engine parts differ between versions of one model?	Yes - one generation of a car may have several engine variants differing in power, equipment and parameters.
Which engines are the most durable?	The 1.9 TDI, DW10C and six-cylinder BMWs, e.g. N55, are considered durable.
Can parts be used between different car models?	Yes, if they have compatible parameters and identical specifications - e.g. DW10C injectors fit Ford, Peugeot and Citroën.

Summary: Car Engines and Parts at Global Parts

Car engines and parts are the foundation of your vehicle's reliability and performance. Maintaining their technical condition ensures long, trouble-free operation. Global Parts Automotive Store We cordially invite you to browse our wide selection of genuine used car parts . Whether you're looking for car parts for BMW , Audi , Volkswagen , Mercedes, Mini, or others, you'll find them at competitive prices. We strive to ensure every customer finds the right parts for their car, and if you have any questions or concerns about selecting the right components, we're happy to help! Please contact us – we're here to help! For more information and interesting facts, visit our automotive blog .

volkswagen car parts used car parts genuine parts audi genuine parts motor store original used parts for mini genuine used audi parts bmw engines & engine parts mercedes engines & engine parts mini engines & engine parts audi engines & engine parts volkswagen engines & engine parts