SKU: BLT-WMC6
Carrillo 3/8in WMC Connecting Rod Bolts- Precision Engineered for High-Performance Builds
The Carrillo 3/8in WMC Connecting Rod Bolts (Part Number: BLT-WMC6), crafted from H11 tool steel with an ultimate tensile strength of 260,000 psi to handle extreme engine stresses in racing and modified applications. These bolts provide consistent clamping force that maintains rod cap alignment under high RPM and boost levels, reducing the risk of failure compared to lower-strength alternatives like ARP 2000 series. Ideal for enthusiasts rebuilding BMW, Porsche, and Audi engines, this single bolt secures one connecting rod with exact fit and repeatable torque values, making it a direct replacement for worn hardware in performance setups.
What’s Included in Your Purchase
- Quantity: 1 x 3/8-24 WMC H6 bolt (underhead length: 1.600 inches)
- Material: H11 tool steel for corrosion resistance and fatigue durability
- Head Style: 12-point for easy installation with standard tools
- Lubricant: Ships with Carrillo-specific bolt lube for accurate stretch measurement during assembly (apply under bolt head and threads)
No additional hardware or tools required everything needed for one rod installation is provided.
Key Specifications and Installation Details
- Thread Size: 3/8-24 UNF
- Bolt Stretch: 0.0065 to 0.0075 inches (measure free length before and after assembly)
- Pre-Torque: 10-18 ft-lb (14-24 Nm)
- Torque Angle: 70° ± 2° after pre-torque
- Final Torque: 65-95 ft-lb (88-129 Nm); do not exceed to avoid over-stretching
- Bolt Weight: Approximately 0.1 lbs (packaged)
- Shipping Box Dimensions: 0.5″ W x 0.5″ H x 2″ L for compact, efficient delivery
Follow Carrillo’s guidelines: Lubricate threads and underhead, hand-tighten cap to beam, then apply torque in stages while monitoring stretch with a micrometer. This method ensures even load distribution across the rod.
Vehicle Fitment Compatibility
These 3/8in WMC bolts fit Carrillo connecting rods in the following high-performance applications (verify rod job number for exact match):
|
Make |
Model |
Engine Code |
Years |
Notes |
|
BMW |
M3 (E90/E92/E93) |
S65B40 |
2008-2013 |
Direct replacement for factory or aftermarket rods in V8 builds |
|
Porsche |
Boxster (986) |
M96.20/22 |
1997-2004 |
Compatible with flat-six engines up to 3.2L |
|
Porsche |
Cayman/Boxster (987.1) |
M97.20/21 |
2005-2008 |
Fits 2.7L-3.4L variants |
|
Porsche |
911 (996) |
M96.01/02 |
1998-2005 |
For Carrera and Turbo models |
|
Audi |
RS3 (8V/8Y) |
DAZA/DNWA |
2013+ |
2.5 TFSI inline-five |
|
Audi |
TT RS (8S) |
DAZA |
2015+ |
2.5 TFSI with stock or upgraded rods |
This bolt supports engines pushing 500+ hp, where precise fitment prevents cap walk and ensures balanced rotation. For custom rod sets, cross-reference with Carrillo’s spec card for job-specific underhead length.
Choose BLT-WMC6 for builds that demand reliability without compromise your engine’s foundation starts here.
Available now for immediate shipping.
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