• Rod Bearing Replacement Kit for BMW N20 N26 Engines Featuring ARP Rod Bolts and Calico Coated Bearings
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5150 AutoSport

E30 M3 S14 High Performance Rod Bearing Kit

E30 M3 S14 High Performance Rod Bearing Kit

$399.99 USD
$399.99 USD $399.99 USD
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Our High-Performance Rod Bearing Kit for the BMW S14 engine is engineered as a superior upgrade to factory OEM bearings. Designed to address the common shortcomings of stock bearings, our kit includes Calico-coated rod bearings, ARP connecting rod bolts, and ARP assembly lubricant—providing a complete solution for connecting rod maintenance.

Kit Contents:

  • Calico-Coated Rod Bearings
  • ARP Connecting Rod Bolts
  • ARP Assembly Lubricant
  • Installation Sheet

The Calico-coated bearings feature advanced anti-friction technology, ensuring consistent lubrication even under high-stress conditions. This makes them ideal for both high-performance engines and street vehicles, offering reliable performance and protection against bearing-related failures, such as spun rod bearings—especially during cold starts.

In addition to reduced friction, these coated bearings provide excellent thermal resistance, which is crucial for engines subjected to forced induction or racing. This thermal resilience also acts as a safety net, reducing the risk of engine failure in situations involving oil pressure loss.

With a proven track record of extended durability and superior performance, the 5150 AutoSport rod bearing kit offers an unmatched level of reliability compared to standard OEM bearings, making it an excellent choice for anyone looking to protect and enhance their BMW S14

Tech Notes:

- Just as with any bearings, it's crucial to verify tolerances and dimensions prior to installation.
- Given the specialized tools necessary, we strongly recommend seeking professional installation.
- There are no returns available on any engine bearings.

Rod Bolt Installation Instructions:

  1. Ensure there is an adequate chamfer around the bolt hole on the connecting rod bolt hole on the connecting rod cap to clear the radius under the head of the bolt
  2. Use ARP Ultra-Torque Fastener Assembly Lubricant to lubricate the threads of the bolt and the under head of the bolt. Then install the bolts and tighten them them hand tight. 
  3. ARP recommends using the Stretch Method when tightening rod bolts. Following the instructions for using a stretch gauge, stretch the bolts to 0.0065 - 0.0070. 
  4. If you do not have a stretch gauge, torque the bolts to 70 ft-lbs using ARP Ultra-Torque Fastener Assembly Lubricant.
  5. The connecting rods should always be re-sized after new rod bolts are installed. 
  6. A log should be kept on the original non-torqued length of each bolt. Bolts that have any permanent deformation or have increased in non-torqued length by more than 0.001 inch should be replaced. 

BMW S14 Applications:

BMW S14B20

1989-1991      E30     320is [Portugal and Italy]

BMW S14B23

1986-1991      E30     M3
1986-1987      E30     M3 Evo I
1988      E30     M3 Evo II

BMW S14B25

1990      E30     M3 Sport Evo (Evo III)

BMW S14B27 Stroker

5150-HPRBK-S14

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