Engine Management Sensors
Find Engine Management Sensors for your vehicle
Enter your reg and we'll show you only parts that fit — no guesswork.
Don't know your reg? Find manually
- ✓ Free delivery on orders over £40
- ✓ UK stock, dispatched from Northampton
- ✓ Filtered to your specific vehicle from DVLA data
Browse all Engine Management Sensors
- BM Catalysts Pressure Pipe PP11086A 2899727800 PP11086A £43.99
- BM Catalysts Pressure Pipe PP11091B PP11091B £49.99
- BM Catalysts Pressure Pipe PP11091A PP11091A £49.99
- BM Catalysts Pressure Pipe PP11080B 2899827280 PP11080B £46.99
- BM Catalysts Pressure Pipe PP11091C 1570A968 PP11091C £84.99
- BM Catalysts Pressure Pipe PP11090B 30731185 PP11090B £36.99
- BM Catalysts Pressure Pipe PP11090A 30731185 PP11090A £37.99
- BM Catalysts Pressure Pipe PP11089B 2899827400 PP11089B £54.99
- BM Catalysts Pressure Pipe PP11087B 2899827280 PP11087B £41.99
- BM Catalysts Pressure Pipe PP11080A 2899727281 PP11080A £31.99
- BM Catalysts Pressure Pipe PP11089A 2899727400 PP11089A £44.99
- BM Catalysts Pressure Pipe PP11085A PP11085A £53.99
- BM Catalysts Pressure Pipe PP11086B 2899827800 PP11086B £47.99
- BM Catalysts Pressure Pipe PP11084A 1714L6 PP11084A £51.99
- BM Catalysts Pressure Pipe PP11081A PP11081A £43.99
- BM Catalysts Pressure Pipe PP11082A PP11082A £51.99
- BM Catalysts Pressure Pipe PP11079B 30731181 PP11079B £37.99
- BM Catalysts Pressure Pipe PP11079A 30731180 PP11079A £40.99
- BM Catalysts Pressure Pipe PP11074B PP11074B £46.99
- BM Catalysts Pressure Pipe PP11074A PP11074A £47.99
- BM Catalysts Pressure Pipe PP11073B A2214910537 PP11073B £32.99
- BM Catalysts Pressure Pipe PP11073A A2214910437 PP11073A £32.99
- BM Catalysts Pressure Pipe PP11070A PP11070A £30.99
- BM Catalysts Pressure Pipe PP11070B PP11070B £30.99
About Engine Management Sensors
NN4 Online stocks a wide range of engine management sensors from established manufacturers including Hella and Bosch. Enter your registration above and we'll narrow the list to engine management sensors 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 management sensors 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 management sensors 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 management sensors. 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 Management Sensors
Our engine management sensors 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.