BMW S55 Connecting Rod Bolts by ARP

Maximize the strength and reliability of your BMW S55 connecting rods with ARP Connecting Rod Bolts—the industry standard for high-performance fasteners. Manufactured in the USA by Automotive Racing Products (ARP), these bolts surpass OEM specifications, ensuring superior durability and resistance to stretch under extreme loads.

Why ARP Rod Bolts?

✔ Unmatched Tensile Strength – Designed to handle extreme cylinder pressures and high RPMs, reducing the risk of rod bolt failure.
✔ Superior Fatigue Resistance – Provides long-term reliability for high-horsepower builds, preventing premature wear and loosening.
✔ Precision Fitment – Specifically engineered for the BMW S55 engine, ensuring a secure and proper installation.

Each kit includes 12 high-performance rod bolts and ARP’s proprietary assembly lubricant for precise torque application and maximum clamping force. Following ARP’s included torque specifications ensures optimal performance and longevity.

A Must-Have for Performance & Track Builds

Whether you're increasing boost, fine-tuning for maximum horsepower, or preparing for track competition, ARP Connecting Rod Bolts provide the confidence and strength your S55 engine demands.

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 0.0070 - 0.0075. 
4. If you do not have a stretch gauge, torque the bolts to 36 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 S55 Applications:

2 Series

2018-2020     F87     M2 Competition

3 Series

2012-2018     F80     M3

4 Series

2014-2020     F82     M4
2014-2020     F83     M4