BMW N43 Engine
Large Network Of Engine Suppliers
Compare Quotes
Save Money
Save Time
BMW N43 Engine For Sale
This engine family is intended to complement and later replace the N45 and N46 families. Of the latter, the N43 family incorporates various characteristics, including:
4- cylinder in-line architecture ;
cylinder head with 4 valves per cylinder;
distribution with two overhead camshafts ;
presence of the Vanos double variable valve timing system.
The continuous valve timing system Valvetronic is also taken over from the N46 family.
The novelty proposed by the N43 family is the direct injection power supply, called HPI ( High Precision Injection ), which ensures better combustion of the air / petrol mixture inside the combustion chambers.
The small N43 family consists of a 1.6-liter and a 2-liter version, the latter available in three power variants.
Best Engine Replacement Procedure
- Swap the engine’s oil, fuel and oil filters, and coolant.
- Install new engine and external coolers if existing.
- Cleanse the cooling system thoroughly, then replace the water pump.
- Renew necessary hoses and belts.
- Install a new timing belt, spark plugs, and wires.
- Replace essential gaskets and seals, focusing on the oil pan, front, and rear main seals.
- Clear the vehicle’s computer codes before engine installation.
- Ensure the replacement engine matches the original specifications.
- Transfer exhaust manifolds, mounts, distributor, and sensors from the old engine.
- Disable fuel and ignition before ignition to prime the oil.
- Ensure no plugs or tape remain on the engine before installation.
7 Common Mistakes to AVOID!
- Not resetting the vehicle’s computer codes before installation.
- Skipping the step of adding engine oil before the first startup.
- Forgetting to deactivate the fuel and ignition systems, essential for priming the oil.
- Ignoring the replacement of the oil cooler or the radiator’s integrated oil cooler.
- Overlooking the cleaning of the radiator and checking the operation of the cooling fans.
- Not swapping out the flywheel and its securing bolts.
- Trying to initiate the engine’s first run without proper priming.