How many connecting rods do I need for my engine?

This connecting rod is sold individually. You will need to order one rod for each cylinder in your engine. For a typical 6-cylinder Cummins, this means ordering six rods.

What is the purpose of the cap relief bolts?

The 7/16 inch cap relief bolts are designed to help maintain the integrity of the connecting rod cap under high cylinder pressures. This feature ensures the cap stays securely fastened to the rod, which is crucial for engine reliability in performance applications.

What is the benefit of the longer deck plate design?

The 1 inch longer deck plate design is beneficial in modified engines. It helps to ensure correct piston-to-deck height and proper geometry with the crankshaft, which is important for overall engine balance and performance when using different piston or crankshaft combinations.

Carrillo Cummins HD Connecting Rod 8.559 7/16 Bolt - DC8559H

Name: Carrillo Cummins Diesel 5.9/6.7 HD w/ Cap Relief 7/16 8.559 1in. Longer Deck Plate Rod - Single
Brand: Carrillo
SKU: carrillo-carrillo-cummins-diesel-5-9-6-7-hd-w-cap-relief-7-16-8-559-1in-longer-d-t14-500457
Price: 516.79 USD
Availability: BackOrder

Carrillo Cummins Diesel 5.9/6.7 HD w/ Cap Relief 7/16 8.559 1in. Longer Deck Plate Rod - Single

$516.79

On Backorder

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

Carrillo Cummins HD connecting rod for 5.9L and 6.7L diesel engines. Features 7/16 cap relief bolts and a 1in longer deck plate.

Key Features

Heavy-duty connecting rod for Cummins 5.9L and 6.7L diesel engines.
Features 7/16 inch cap relief bolts for secure cap retention.
Rod length is 8.559 inches.
Includes a 1 inch longer deck plate design for modified engine builds.
Forged from high-strength steel for durability under stress.
Sold individually; order quantity to match engine cylinders.

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Product Details

When you're building a high-performance Cummins diesel, especially one that will see heavy use or significant power increases, the connecting rods are a critical component to get right. This heavy-duty connecting rod from Carrillo is specifically made for Cummins 5.9L and 6.7L diesel engines, offering a strong upgrade over stock for demanding applications.

Carrillo rods are well-known in the performance diesel world for their robust construction. This particular rod features a 7/16 inch cap relief bolt design, which is important for ensuring the cap stays securely in place under high cylinder pressures. The 8.559 inch length and the 1 inch longer deck plate design are also key features that help with proper piston and crankshaft geometry in modified engines. These rods are forged from high-strength steel, giving you the confidence that they can handle the stresses of increased horsepower and torque.

This rod is sold individually, so you'll need to order the correct quantity for your engine's cylinders. It's a solid choice for anyone looking to build a reliable and powerful Cummins engine that can withstand the rigors of serious work or competition.