Manley 14015-4 H-Beam Connecting Rods ARP Honda K24 2.4L VTEC 5.984in 4340 Set

Vehicle Fitment

• 2002-2006 Honda CR-V (K24A1, 2.4L DOHC i-VTEC)
• 2007-2011 Honda CR-V (K24Z1, 2.4L DOHC i-VTEC)
• 2003-2005 Honda Accord (K24A4, 2.4L DOHC i-VTEC)
• 2006-2007 Honda Accord (K24A8, 2.4L DOHC i-VTEC)
• 2008-2012 Honda Accord (K24Z2 / K24Z3, 2.4L DOHC i-VTEC)
• 2003-2011 Honda Element (K24A4 / K24A8, 2.4L DOHC i-VTEC)
• 2004-2008 Acura TSX (K24A2, 2.4L DOHC i-VTEC)
• 2009-2014 Acura TSX (K24Z3, 2.4L DOHC i-VTEC)
• 2012-2015 Honda Civic Si (K24Z7, 2.4L DOHC i-VTEC)
• 2013-2015 Acura ILX (K24Z7, 2.4L DOHC i-VTEC)

Fitment Notes

• Fits all Honda/Acura K24 family engines (K24A1, K24A2, K24A4, K24A8, K24Z1, K24Z3, K24Z7) sharing the 5.984 in. center-to-center length and 22mm wrist pin - verify your engine code before ordering
• Also suitable for K-swap builds using a K24 block in non-factory K24 chassis applications
• Rod bolt torque specification: 60 ft-lbs with 30wt oil; rod bolt stretch: 0.0058 in.-0.0062 in.
• Wrist pin diameter is 22mm (0.866 in.) - confirm piston pin bore compatibility before pairing with aftermarket pistons
• Sold as a set of 4 rods
• Professional engine builder installation recommended

Features

• H-Beam design machined from premium forged 4340 chromoly steel alloy for maximum strength and fatigue resistance under high-boost and high-RPM conditions
• Rated to approximately 600 HP - suitable for naturally aspirated and forced induction K24 builds
• Full heat treatment, stress relieving, shot peening, and magnafluxing processes applied to every rod for optimum structural integrity and defect detection
• Big end and wrist pin bores honed to a ±0.0002 in. tolerance for a precision fit with minimal clearance deviation
• Bronze alloy small end bushing pressed into the wrist pin bore for improved wear resistance and longevity under high-load operation
• Weight matched as a set to within ±1.5 grams for superior rotating assembly balance and reduced vibration at high RPM
• Perfectly round big and small end bores with tightly controlled bend and twist specifications
• Manufactured from the same forged 4340 alloy used in Manley's OEM and professional motorsport applications
• Includes ARP 2000 3/8 in. cap screws - high-strength performance rod bolts with a tensile strength of 220,000 PSI for reliable clamping at high engine loads
• H-Beam Economical Series - delivers Manley Pro Series-level quality at an accessible price point for performance builders

Specifications

• Rod Style: H-Beam
• Series: H-Beam Economical
• Material: Forged 4340 Chromoly Steel Alloy
• Center-to-Center Length: 5.984 in. (152 mm)
• Big End Bore Diameter: 2.008 in. (51.003 mm)
• Big End Width: 0.780 in. (19.812 mm)
• Wrist Pin Diameter: 0.866 in. (22mm)
• Pin Bore Diameter: 0.8671 in.
• Pin End Width: 0.866 in.
• Small End Bushing: Bronze Alloy (Pressed In)
• Bore Tolerance: ±0.0002 in. (big end and pin bore)
• Rod Weight: ~527 grams each
• Weight Matching Tolerance: ±1.5 grams per set
• Bolt Size: 3/8 in.
• Included Bolts: ARP 2000 Cap Screws (3/8 in.)
• Rod Bolt Torque Spec: 60 ft-lbs (with 30wt oil)
• Rod Bolt Stretch Spec: 0.0058 in.-0.0062 in.
• HP Rating: ~600 HP
• Quantity: Set of 4
• Application: Honda/Acura K24 Family (2.4L DOHC)

Included Components

• 4x Manley H-Beam connecting rods (forged 4340 steel, bronze bushed small end)
• 4x ARP 2000 3/8 in. cap screws (rod bolts)

Product Description

The Manley 14015-4 is a set of four H-Beam connecting rods engineered specifically for Honda and Acura K24 family engines - including the K24A1, K24A2, K24A4, K24A8, K24Z1, K24Z3, and K24Z7 variants - found in vehicles such as the Honda CR-V, Honda Accord, Honda Element, Acura TSX, Honda Civic Si, and Acura ILX. Machined from forged 4340 chromoly steel alloy, these rods are manufactured using the same rigorous processes and tolerances that Manley applies to its OEM and professional motorsport connecting rod programs. Every rod undergoes full heat treatment, stress relieving, shot peening, and magnafluxing, with big end and wrist pin bores honed to a ±0.0002 inch tolerance for consistent precision across the entire set.

The H-Beam Economical Series designation means these rods deliver Pro Series-level quality and construction at an accessible price point - a distinction that has made the 14015-4 one of the most popular K24 rod upgrades for enthusiasts building everything from street K-swaps to boosted track builds. Each set is weight-matched to within ±1.5 grams for optimized rotating assembly balance, and the bronze alloy small end bushing provides long-term wear resistance at the wrist pin interface. The 22mm (0.866 in.) wrist pin diameter is compatible with the full range of factory K24 rotating assemblies and most popular K-series aftermarket pistons - verify pin bore size when pairing with custom piston kits. The rods are rated to approximately 600 HP, covering the full range of naturally aspirated K24 builds as well as moderate to aggressive forced induction applications.

ARP 2000 3/8 in. cap screws are included with each set and deliver 220,000 PSI tensile strength for reliable rod cap clamping at high engine loads. Rod bolt torque spec is 60 ft-lbs with 30wt oil, with a target stretch of 0.0058-0.0062 in. Professional engine builder installation is recommended. These rods are also a popular choice for K-swap builds using the K24 block in non-factory applications, thanks to the universal fitment across the entire K24 engine family.