The S65 V8 engine used in E9X M3 cars has a rod bearing problem much like its predecessors, and we have already seen multiple engines throw rods, which will cost you over $15,000 to replace. Our kit, consisting of a treated rod bearing and race-quality ARP hardware set, addresses this issue and is recommended for cars that are driven on-track or with increased power output (supercharged, stroked, etc).

Our treated rod bearings are not coated - coatings often add too much material and interfere with proper tolerances, causing more problems than they solve. The bearings we use in our kits have been treated with a process that improves the bearing's fatigue resistance and increases the surface's oil retention abilities, providing more lubricity in this critical area of the S65 engine.

ARP Pro Series connecting rod bolts are precision CNC-machined to exacting specifications and designed for optimum reliability. They are heat-treated and threads are rolled to provide up to ten times more fatigue strength than a fastener with a traditional cut thread. This makes the bolts far superior to standard OEM fasteners in terms of durability, meaning that they are capable of handling the extra stress in high-compression engines.

Engine Note - To protect your engine and prevent failures, either with or without our kit, we strongly suggest a quality oil, such as Red Line with a higher zinc content. Correct oil operating temperateure is 220F+, and you should let your car warm up properly before subjecting the engine to higher throttle angles and RPMs.

This kit fits all S65 engines and includes eight upper bearing halves, eight lower bearing halves,16 connecting rod bolts, and ARP assembly lubricant. We recommend replacing your oil pan gasket while installing this kit. Oil pan gaskets are available separately.