GSC Power Division 3053-8 Manganese Bronze Exhaust Valve Guides for Honda B-Seri

Vehicle Fitment

• 2002-2015 Honda Civic (K20A, K20A2, K20A3, K20Z1, K20Z3, FWD)
• 2002-2012 Honda CR-V (K24A1, K24Z1, FWD/AWD)
• 2003-2015 Honda Accord (K24A4, K24A8, K24Z2, K24Z3, FWD)
• 2012-2015 Honda Crosstour (K24Z3, FWD/AWD)
• 2003-2011 Honda Element (K24A4, K24A8, FWD/AWD)
• 2002-2006 Acura RSX (K20A2, K20A3, K20Z1, FWD)
• 2004-2014 Acura TSX (K24A2, K24Z3, FWD)
• 2013-2015 Acura ILX Base (K24Z7, FWD)
• 2015 Acura TLX Base (K24W5, FWD)

Fitment Notes

• Fits K-Series VTEC engines with 5.5mm valve stem diameter (smooth style, no stopper)
• For 6mm stem diameter applications, use GSC part number 3021-8 or 3023-8 (stopper style)
• Does not fit Honda Civic Type R (2001-2011) or Integra Type R - those require stopper-style guides
• Standard size; oversized options (+0.001" / +0.003" OD) available as single units

Features

• Made from proprietary Manganese Bronze alloy for superior wear resistance and thermal conductivity
• Smooth style design (no stopper) for clean installation in standard K20/K24 cylinder heads
• CNC-machined on dedicated precision turning centers for extremely tight tolerances
• Tight through-hole concentricity to OD reduces required honing time during installation
• True-to-size OD minimizes boss honing on cylinder heads not requiring boss service
• Designed to withstand high-heat, high-RPM, and forced induction environments
• Available in standard and oversized options to accommodate worn guide bores
• Engineered specifically for performance and aftermarket builds on K-Series platforms

Specifications

• Total Length: 1.795 in / 45.59 mm
• Outer Diameter: 0.4359 in / 11.07 mm
• Valve Stem Diameter: 5.5 mm
• Style: Smooth (no stopper)
• Material: Manganese Bronze
• Position: Exhaust side
• Application: Honda K20 / K24 VTEC K-Series engines

Included Components

• 8x GSC Manganese Bronze Exhaust Valve Guides (Standard Size)

Product Description

The GSC Power Division 3053-8 is a set of eight standard-size Manganese Bronze exhaust valve guides engineered for Honda and Acura K20/K24 VTEC engines. Built from a proprietary bronze alloy, these guides offer better heat dissipation and wear resistance compared to OEM cast iron guides, making them a trusted choice for high-performance street builds, turbocharged setups, and engine rebuilds requiring precise valve control.

Each guide is CNC-machined to extremely tight tolerances, ensuring proper concentricity between the through-hole and outer diameter. This precision fit reduces honing time during installation and ensures consistent valve stem clearance across all eight exhaust ports. Whether you're refreshing a worn cylinder head or upgrading during a full build, these guides drop in cleanly and deliver the reliability expected from GSC Power Division's valvetrain lineup.