What makes the Pro-H beam design beneficial?

The Pro-H beam design is Carrillo's approach to creating a connecting rod that balances robust strength with reduced weight. This is important for performance engines as it helps improve overall engine response and efficiency while ensuring the rod can handle significant loads.

Are these rods a direct replacement for the stock connecting rods?

Yes, these Carrillo Pro-H connecting rods are designed to be a direct fit for the specified Nissan and Infiniti QR25 engines. This means they should install in place of your original equipment rods, simplifying the engine building process.

What are WMC bolts and why are they used?

WMC (Wichita Machine Company) bolts are a popular choice for high-performance engine builds due to their strength and reliability. The 3/8 inch size used here is specifically chosen to provide secure clamping force for these connecting rods under demanding operating conditions.

Specifications

Brand: Carrillo
Part #: SCR6506-4

Carrillo Nissan/Infiniti QR25 Pro-H 3/8 WMC Bolt Connecting Rods

Name: Carrillo Nissan/Infiniti QR25 Pro-H 3/8 WMC Bolt Connecting Rods
Brand: Carrillo
SKU: carrillo-carrillo-nissan-infiniti-qr25-pro-h-3-8-wmc-bolt-connecting-rods-t14-241781
Price: 1282.50 USD
Availability: BackOrder

$1282.50

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2002-2013 Nissan Altima. Carrillo Pro-H connecting rods for QR25 engines, built for performance.

Key Features

Fits 2002-2013 Nissan Altima, 2005-2012 Nissan Frontier, 2008-2012 Nissan Rogue, and 2002-2012 Nissan Sentra.
Designed for the Nissan/Infiniti QR25 engine.
Features Carrillo's Pro-H beam design for a strong yet lightweight profile.
Forged from high-strength steel for durability.
Includes 3/8 inch WMC bolts, known for their reliability and consistent clamping force.
Built to handle the increased stress of performance engine builds.

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About this part

Product Details

Carrillo is well-known for making strong internal engine components for demanding applications. These Pro-H connecting rods are a prime example, specifically designed for the Nissan/Infiniti QR25 engine found in vehicles like your 2002-2013 Altima. If you're building a performance QR25 engine, these rods are a critical piece for handling increased power and stress.

These rods feature Carrillo's Pro-H beam design, which offers a good balance of strength and weight. They are forged from high-strength steel and come equipped with 3/8 inch WMC (Wichita Machine Company) bolts, which are a popular choice for their reliability in high-stress environments. The WMC bolts are known for their consistent clamping force and durability under repeated cycles of high load. This setup ensures that your connecting rods can withstand the rigors of a performance engine build, helping to prevent failures that can occur with stock components when pushed beyond their limits.

When you're rebuilding the bottom end of a QR25 engine for performance, using well-built connecting rods like these Carrillos is essential. They are designed to be a direct replacement for the factory rods, simplifying installation for your mechanic. Make sure to follow the manufacturer's recommended torque specifications and assembly procedures when installing these rods to ensure optimal performance and longevity.