BMW Engine Parts for BMW Z4 M Roadster S54 (2003-2008)

BMW S54 VAC Performance Coated Rod Bearing Kit is highly regarded by BMW engine builders worldwide for its superior quality and performance. Ideal for both forced induction and naturally aspirated builds, these coated bearings are designed to be friction-resistant, reducing the risk of thermal breakdowns due to inadequate lubrication. This feature significantly decreases the chances of premature engine failure in street cars and minimizes the risk of spun bearings during high-stress track conditions.

The VAC Performance Coated Rod Bearing Kit is proven to help maintain engine reliability, even in situations with reduced oil pressure.

• Enhanced Durability: Coated bearings are friction-resistant, reducing the risk of thermal breakdown.
• Increased Reliability: Helps prevent premature engine failure and spun bearings under stress.
• Versatile Performance: Suitable for both forced induction and naturally aspirated engine builds.
• Proven Track Record: Tested by customers to ensure reliable performance even with oil pressure loss.

VAC Tech Notes:

• Ensure proper tolerance and size checks before installation.
• Professional installation is recommended due to specialized tools required.
• Returns are not available on any engine bearings.

VAC's S54 Vanos Hub is designed as a direct replacement for the fragile BMW OE Vanos Hub which typically fails due to a broken drive pin. The VAC Hub has an Upgraded Drive Pin design, which is larger in diameter, as well as more material on the outside wall of the pin. In addition, the hub is made from 4340HT Billet Bar and heat treated to the same BMW OE Rockwell Hardness spec. The upgraded design is not only significantly stronger, but the larger diameter Drive Pins also minimize the huge clearance (approximately 1mm) that was in the original design by BMW and reduces the clearance to 0.2mm. This is critical in helping greatly reduce or eliminate the VANOS noise.

Also, this upgraded design eliminates the need for modifying the Pump Ring or having to buy a replacement, which further saves you money!!!

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