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BMW > 5 Series (E39) > A) ENGINE PERFORMANCE (See also forced induction & remapping sections) > - Oil, Water & Cooling System Upgrades, Connector Blocks, Sump Baffles, Guards Etc > Hopwood Motorsport

Product Code: hopm54



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Description
Please note, the price listed here is for the complete kit comprising of : -
- reconditioned pump
- Uprated sprocket
- Chain, and tensioner with guide

We can also sell you just the uprated sprocket and bolts ands washers, please enquire for price

The M54 (and M52TU) oil pumps are a sore spot for many - especially for those who have raised their rev limits or spend a lot of time at high RPMs. The single nut holding the sprocket to the rotor shaft vibrates loose over time causing loss of oil pressure and catastrophic damage to the engine in a matter of seconds. There are many things that cause this to occur: A worn chain, worn sprockets and crank harmonics (on the M54B30). A common “fix” is to weld the nut to the shaft and ‘send it’, however, due to the chain slap from a worn chain/sprockets this ends up snapping the shaft instead of loosening the nut.

The overlooked design from BMW can be fixed long-term without welding the inside of your engine and without great expense (especially compared to the price of a new engine) with a chain tensioner and a 7-bolt oil pump. The tensioning unit we currently use is in OEM application in other vehicles and is proven over many years to reduce the standard M54 chain slap on even old, worn chains. The oil pumps we modify use a custom machined hardened shaft with completely overhauled internals and a custom built sprocket. The sprocket is then held to the shaft with up to 7 hardened bolts and genuine NordLock anti-vibration washers (we will supply with 4 bolts and 3 nordlock washers - see product photos).

*SEE ALSO billet insert upgrade kit HERE


Estimated Volumetric Shipping Weight : 3.00 Kg
 

Product Code: hopm54bil



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Description
As can be common on standard M52TU/M54 oil pumps, the left-hand-thread nut can vibrate itself loose or, if the nut is tacked in place, the pump shaft itself shears at high RPM causing serious internal damage to the engine. This simple to fit, full billet design combines brand new genuine BMW parts with our own stronger shaft and custom billet front face to create a practically “bulletproof” upgrade to the weaker original pump which doesn’t require periodic checks on torque.

Along with the pump insert itself you will receive two new o-rings (one for the pressure regulation valve, one for the oil pick-up pipe), all required hardware to fit the insert to your original pump body, an oil pump chain tensioner and a full instructional guide to help you through the fitting process.

This insert includes a brand new inner rotor and is as easy to fit as unbolting the original face and replacing with our new unit.

Features :
-Custom machined billet oil pump face to fit perfectly onto the original pump
-Brand neew inner oil pump rotor from BMW
-Strong shaft which has proven itself over the last 4 years as being the strongest on the market
-Brand new o-rings to replace old, worn parts
-Full instructional guide included including torque settings
-Fit and forget item
-Custom laser-cut hardened sprocket which can be replaced if ever required

** SEE ALSO the Hopwood complot uprated oil pump kit HERE



Estimated Volumetric Shipping Weight : 2.00 Kg
 

 

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