Oiling System for BMW 3 Series E46 (1999-2005)

Clear BMW chassis

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.

Sub-Categories

Sort By:

Accusump Marine 2 Qt Kit

T#:8246787

Part#: 24-126

Ships on Dec 4, 2026

17% off MSRP $ 1,006.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 839.00 USD

Add to Wish List

Qty

17% off MSRP

$ 1,006.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 839.00 USD

Add to Wish List

Rally Road M50 Oil Cooler Cap Adapter Kit

T#:401511

Part#: RROCCK

Ships on Dec 1, 2026

Starting at $ 243.99 USD

Add to Wish List

Starting at $ 243.99 USD

Add to Wish List

Rally Road Productions, Inc. is a team supported by a group of people with great abilities in their area of expertise. From the "web guy" and driving instructor friends, to owners of various machine shops, they have surrounded ourselves with people that can be trusted to create and manufacture quality products. This is the key to ensuring everything that they sell will perform as it was intended. The goal is to increase customer satisfaction and make the customization or performance enhancement of your vehicle a more enjoyable venture.

This oil cooler system is race tested and proven to outflow the euro M3 oil filter housing. Additionally, this particular system uses a sealing mechanism to direct the oil flow through the cooler lines and then through the oil filter. Other cooler caps do not provide this seal and therefore the external oil coolers and lines act as a "balloon". The lines and cooler are pressurized, but oil does not flow through them. Flowing oil means it is being cooled and not just acting as an external reservoir.

Flow testing reveals that the oil cooler cap will outflow the Euro M3 Oil Filter Housing by more than 80% at the same, pressure, RPM, and oil temperature. In the upper RPM range, there is nearly a 100% improvement in flow from the RallyRoad oil cooler cap when compared to the Euro M3 oil filter housing. This is a massive improvement over OE and is a worthwhile upgrade, especially in engines that see severe duty.

Features:

-8AN o-ring ports to provide a leak free fitting without the use of Teflon tape or sealant used by other oil cooler caps.
Viton o-rings are used throughout to maintain function and sealing in a high-temperature oil environment.
Use of the stock filter cap bolt to reduce cost and simplify installation.
An internal sealing mechanism to direct oil flow through the oil cooler and through the filter.
1/8" NPT side port for external oil pressure gauge.

Kit Includes:

Oil filter cap with fittings
Oil filter sealing ring
BMW MANN Oil Filter and gasket

This part fits the following BMWs
1992-1999 E36 323i 325i 325is 328i 328is

Show More Show Less

HARD Motorsport BMW Oil Cooler Fitting Adapter Plate - E36 E46 E82 E9...

T#:593621

Part#: OILADPTR

Special Order: No Guaranteed ETA

$ 62.00 USD

Add to Wish List

Qty

$ 62.00 USD

Add to Wish List

The HARD Motorsport Oil Cooler Fitting Adaptor Plate allows you to upgrade your oil cooler lines to a flexible braided hose that can be routed in any direction, giving the ability to upgrade or relocate your oil cooler. This kit replaces the oil cooler hard lines with two -10 AN fittings, mounting bracket, O-rings, and adaptor bracket, which is CNC machined stainless steel.

Show More Show Less

24-270X Accusump Pro Electric Valve Kit

T#:590562

Part#: 24-270X

Ships on Dec 4, 2026

17% off MSRP $ 297.60

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 248.00 USD

Add to Wish List

Qty

17% off MSRP

$ 297.60

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 248.00 USD

Add to Wish List

Select Vehicle

Purpose

Brand

View All Brands

Price

Shipping

Free Shipping (3)

Project Cars

SELECT YOUR BMW

Oiling System for BMW 3 Series E46 (1999-2005)

Sub-Categories

Accusump Marine 2 Qt Kit

Rally Road M50 Oil Cooler Cap Adapter Kit

HARD Motorsport BMW Oil Cooler Fitting Adapter Plate - E36 E46 E82 E9...

24-270X Accusump Pro Electric Valve Kit

Select Vehicle

Purpose

Category

Brand

Price

Shipping

Narrow Results