Engine Parts - Engine Internals
Find Engine Parts - Engine Internals 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 - Engine Internals
- Febi Valve Guide OD ID 177608 £8.99
- Febi Crankcase Oil Separator 177546 £70.99
- Febi Cylinder Head Cover Gasket LEM (Liquid 177604 £41.99
- Febi Cylinder Head Cover Plastic 177589 £97.99
- Febi Engine Oil Sump Pan 177591 £27.99
- Febi Valve Guide 16mm OD ID 177593 £8.99
- Febi Engine Oil Sump Pan 177587 £50.99
- Febi Cylinder Head Cover Plastic 1004339 £287.99
- Febi Engine Oil Sump Pan 177588 £88.99
- Febi Cylinder Head Cover Gasket Set ACM (Polyacrylate) 177566 £45.99
- Febi Cylinder Head Cover Plastic 1004119 £116.99
- Febi VVT Camshaft Control Valve 1004009 £41.99
- Febi Engine Intake Valve 28mm Head 1004080 £14.99
- Febi Cylinder Head Cover 1004076 £180.99
- Febi Air Filter Intake Hose Plastic 340mm 1003960 £60.99
- Febi Air Compressor Connecting Rod 177480 £33.99
- Febi Cylinder Head Gasket Thick 17745 £18.99
- Febi Engine Camshaft Lobes 1003888 £155.99
- Febi Engine Timing Rocker Arm 1003823 £50.99
- Febi Cylinder Head Gasket Thick 17743 £16.99
- Febi VVT Camshaft Control Valve 1003720 £81.99
- Febi VVT Camshaft Control Valve 177412 £80.99
- Febi Cylinder Head Gasket Kit 17739 £35.99
- Febi Engine Camshaft Intake Side Lobes 1003268 £180.99
About Engine Parts - Engine Internals
NN4 Online stocks a wide range of engine parts - engine internals from established manufacturers including Apec Red, Bosch, NRF, MANN-FILTER and Mahle. Enter your registration above and we'll narrow the list to engine parts - engine internals 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 - engine internals 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 - engine internals 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 - engine internals. 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.
Brands for Engine Parts - Engine Internals
We stock engine parts - engine internals from these manufacturers — each linked to a dedicated brand page with the full range:
About Engine Parts - Engine Internals
Our engine parts - engine internals 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.