Oiling System for BMW 5 Series E34 (1987-1995)

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Tasked with keeping everything properly lubricated, the oiling system is one of the most if not THE most fundamental parts of the engine. Make sure that everything is in good working order and flowing properly to ensure your engine has a long and trouble-free service life.

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Achilles Motorsports - Corporate Logo
T#:1150772
Part#: 11-AM-UOPSK
In Stock
$ 217.99 USD
Free Shipping
$ 217.99 USD
Free Shipping
The early M5X engines have well-documented issues caused by harmonics. The extreme vibrations cause the weak oil pump shaft to shear off or the oil pump nut to come loose and fall off, all of which results in an instant loss of oil pressure. Achilles Motorsports decided to develop a solution to fix all of these known issues. Achilles takes their oil pump shafts to the extreme, using only the toughest materials and heat treatment processes to ensure optimum strength. The core of this kit is a hardened Chromoly shaft that is centerless ground to ensure absolute trueness. The shaft is engineered with an exclusive square key lock system that not only prevents the gear from ever spinning on the shaft but also adds strength to the area to which the gear mounts. Achilles Motorsports then replaced the pesky oil pump nut with an extended length bolt that is EDM drilled for safety wire to properly secure it for all conditions. Don't wait for your oil pump to fail and leave you stuck with costly engine repairs! Key Features: Hardened Chromoly centerless ground shaft EDM Drilled Bolt with a piece of safety wire included Grade 8 extended length hardware to secure the gear to the shaft Left hand threaded to prevent it from unexpectedly coming loose Double-D keyed shaft and drive gear 100% serviceable & rebuildable without the need for grinding. NOTE: Professional installation required! The shaft requires being pressed into the oil pump's inner rotor.
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Achilles Motorsports E34 M50 Oil Pan Baffle Kit - E34 525i M50, E30 w...
For models with a 24v Swap (M5X, S5X engines) using the E34 525i M50 oil pan
Achilles Motorsports - Corporate Logo
T#:1150767
Part#: 11-AM-OPB-E34
Ships Jul 2, 2025
$ 154.99 USD
Free Shipping
$ 154.99 USD
Free Shipping
The best solution for 24v Swapped E30's using an M50, M52, S50, S52US, S54, or Euro S50 Engine with the E34 525i M50 oil pan! The Achilles Motorsports Oil Pan Baffle was designed and manufactured to be used on racing, high-performance track, and street driven cars. Each baffle is precision laser cut from .090" heat-treated aluminum then hand-assembled and test fit to ensure accuracy and ease of installation. Achilles Motorsports' baffle design incorporates dual trap doors and a unique oil deflector that prevents oil from splashing out of the sump under hard braking. Together, these help minimize the sloshing of the oil inside the oil pan and keep oil accumulated around your pickup tube. The factory BMW oil pan doesn't do a very good job of keeping oil accumulated around the oil pick-up tube in high g-force situations. By keeping oil accumulated around the pickup tube you can eliminate the costly loss of oil pressure and potential damage to other vital engine parts commonly caused by high g-forces from hard acceleration and braking and high-speed cornering. Professional welding is required for installation!
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Ina - Corporate Logo
T#:42301974
Part#: ZC0310
Ships in 7 Business Days
New Item
$ 12.99 USD
$ 12.99 USD
This is the chain that is responsible for driving the oil pump and ensuring your engine is properly lubricated.

Ina - Corporate Logo
T#:42302000
Part#: ZC-C172
Ships in 7 Business Days
New Item
$ 9.99 USD
$ 9.99 USD
Preserve the performance and reliability of your classic BMW with the OEM INA Engine Oil Pump Chain

VAC Motorsports - Corporate Logo
T#:26938505
Part#: VAC-BOFH-M50-WS
Ships Jul 15, 2025
$ 649.99 USD
$ 649.99 USD
Canton Racing - Corporate Logo
T#:590562
Part#: 24-270X
Ships Jul 18, 2025
$ 228.00 USD
Free Shipping
$ 228.00 USD
Free Shipping

Canton Racing - Corporate Logo
T#:8246787
Part#: 24-126
Ships Jul 18, 2025
$ 738.00 USD
$ 738.00 USD