Engine Parts - Fuel & Engine Management
Find Engine Parts - Fuel & Engine Management for your vehicle
Enter your reg and we'll show you only parts that fit — no guesswork.
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- ✓ Free delivery on orders over £40
- ✓ UK stock, dispatched from Northampton
- ✓ Filtered to your specific vehicle from DVLA data
Browse all Engine Parts - Fuel & Engine Management
- Bosch Diesel Injector Nozzle Tip H 105 000 224 £28.99
- Bosch Diesel Injector Nozzle Tip H 105 007 112 £15.99
- Bosch Diesel Injector Nozzle Tip 9 432 610 080 £30.99
- Bosch Diesel Injector Nozzle Tip 9 432 610 042 £51.99
- Bosch Injector Clamp / Holder 9 430 615 006 £69.99
- Bosch Fuel Tank Sender Unit in the fuel tank 0 986 580 226 £71.99
- Bosch Fuel Tank Sender Unit in the fuel tank 0 986 580 228 £103.99
- Bosch Fuel Tank Sender Unit in the fuel tank 0 986 580 229 £147.99
- Bosch Fuel Tank Sender Unit in the fuel tank 0 986 580 225 £123.99
- Bosch Fuel Tank Sender Unit in the fuel tank 0 986 580 227 £135.99
- Bosch Fuel Tank Sender Unit in the fuel tank 0 986 580 223 £72.99
- Bosch Fuel Tank Sender Unit in the fuel tank 0 986 580 198 £127.99
- Bosch Fuel Tank Sender Unit in the fuel tank 0 986 580 197 £111.99
- Bosch Fuel Tank Sender Unit in the fuel tank 0 986 580 195 £71.99
- Bosch Throttle Position Sensor F 026 T03 075 £248.99
- Bosch Fuel Tank Sender Unit in the fuel tank 1 987 580 041 £84.99
- Bosch Fuel Tank Sender Unit in the fuel tank 0 986 580 387 £113.99
- Bosch Diesel Injection Pump 0 986 445 102 £411.99
- Bosch Diesel Injection Pump 0 986 445 018 £427.99
- Bosch High Pressure Fuel Pump 0 986 437 473 £670.99
- Bosch High Pressure Fuel Pump 0 986 437 478 £575.99
- Bosch High Pressure Fuel Pump 0 986 437 472 £703.99
- Bosch High Pressure Fuel Pump 0 986 437 432 £877.99
- Bosch High Pressure Fuel Pump 0 986 437 502 £852.99
About Engine Parts - Fuel & Engine Management
NN4 Online stocks a wide range of engine parts - fuel & engine management from established manufacturers including Hella and Bosch. Enter your registration above and we'll narrow the list to engine parts - fuel & engine management that match your vehicle in the TecDoc catalogue. We always recommend confirming the part dimensions against your existing component before fitting, as specifications can vary between trim levels and engine variants.
All stock dispatches from our Northampton warehouse with free standard delivery on orders over £40 to most UK mainland locations. Browse the full engine parts - fuel & engine management catalogue below, or use the registration lookup to filter to parts matched to your vehicle.
Frequently asked
How do I know a part will fit my car?
Enter your registration above and we cross-check against the TecDoc catalogue to narrow the list to engine parts - fuel & engine management listed against your vehicle. Specifications can still vary between trim levels and engine variants, so we recommend confirming the part dimensions against your existing component before fitting.
What brands do you stock?
We stock established manufacturer brands sourced through trade channels. The brand row at the bottom of this page shows which manufacturers we carry for engine parts - fuel & engine management. We don't sell unbranded parts.
How quickly will my order arrive?
Most orders dispatch from our Northampton warehouse within 1–2 working days. Free standard delivery on orders over £40 to most UK mainland locations.
What if the part doesn't fit?
Please check our returns policy for the current terms. If you're unsure about fitment for your specific vehicle variant, please contact our team before ordering using the details at the bottom of the site.
Can I check fitment before ordering?
Yes — every product page shows whether the part is listed against your selected vehicle. Where multiple sizes exist for the same vehicle, the dimensions are shown so you can compare against your existing part. If you're unsure, contact our team for help confirming the right option.
About Engine Parts - Fuel & Engine Management
Our engine parts - fuel & engine management range is built from established UK suppliers and trusted aftermarket brands. Each product is mapped against OE/OEM references and TecDoc ktype data so the reg-lookup above filters to only the parts that fit your specific make, model, engine and trim.
Enter your registration to see exact-fit options — or browse by brand using the tiles above. The full catalogue covers most major makes and models on UK roads, with same-business-day dispatch on stock items ordered before 2pm.
Engine and cooling system parts
Engine and cooling parts span a wide spectrum — timing belts and chains, water pumps, alternators, starters, gaskets and seals. Some are service-interval items (timing belt every 5-10 years or 60-100k miles depending on engine), others are catch-it-early items where small failures can lead to bigger ones if ignored.
Common engine warning signs
- Whining or rattling from the front of the engine — failing belt tensioner or alternator bearing.
- Coolant loss with no visible leak — head gasket, hose or water pump seal.
- Charging warning light or dim headlights at idle — alternator output dropping.
- Slow cranking on cold mornings — starter motor or battery, both worth checking.
Don't postpone a timing-belt service
The biggest avoidable engine failure on the UK fleet is timing-belt overrun. If your service book is missing or the previous owner's record is unclear, get it checked — replacing a belt costs a few hundred pounds; replacing the engine after a belt snap on an interference engine runs into thousands.
Why buy from NN4 Online
- Reg-lookup fitment — see only the parts mapped to your specific vehicle.
- UK warehouses — most stock items dispatch same business day on orders before 2pm.
- Established brands — the brand tiles above are the full list available in this category.
- Standard returns — handled per our returns policy linked in the footer.