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 Engine Timing Rocker Arm 1006349 £1,368.99
- Febi Cylinder Head Cover Plastic 178029 £133.99
- Febi Camshaft Seal Cap OD Thick Rubber 178028 £14.99
- Febi Engine Oil Pump Assembly 178036 £94.99
- Febi Oil Sump Screw Plug Steel 178024 OE 55184773 04892753AA 55235963 68328370AA £7.99
- Febi Engine Intake Valve 45mm Head 178020 £13.99
- Febi Cylinder Head Cover Plastic 1006197 £205.99
- Febi Oil Cooler Gasket Wide Thick 178003 £8.99
- Febi Cylinder Head Cover Gasket ACM (Polyacrylate) 177973 £18.99
- Febi Crank Shaft Belt Pulley 1006193 £110.99
- Febi Intake Manifold Fitting Connectors 1006156 £349.99
- Febi Crankshaft Shaft Seal 227mm OD ID Wide 177983 £48.99
- Febi Oil Pump Pickup Tube ID 177974 £23.99
- Febi Engine Camshaft Lobes 1006127 £1,656.99
- Febi VVT Camshaft Control Valve Exhaust Side 177970 £88.99
- Febi VVT Camshaft Control Valve Exhaust Side 177957 £44.99
- Febi Camshaft Adjuster Intake Side 46 Teeth 1006032 £101.99
- Febi Valve Guide OD ID 177904 £11.99
- Febi Valve Guide OD ID 177905 £11.99
- Febi Engine Camshaft Lobes 1005905 £182.99
- Febi Engine Camshaft Lobes 1005807 £137.99
- Febi Crank Shaft Belt Pulley 1005847 £75.99
- Febi Camshaft Adjuster Exhaust Side 46 Teeth 1005662 £98.99
- Febi Engine Camshaft Exhaust Side Lobes 1005665 £152.99
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.