Golden Eagle K-Series Head Gasket – PRB-A01 Style, Compatible with 86–90mm Bore

Description

Golden Eagle Mfg Advanced Seal K-Series Head Gaskets (PRB-A01 Style) are engineered for high-horsepower K-series builds and reliable daily driving. Designed to replace OEM part numbers 12251-PRB-A01, 12251-PNA-004, and 12251-PNC-003, these gaskets are perfect for performance enthusiasts and professional racers alike.
Fitment:

• Honda/Acura K20A2, K20A3, K20Z1: 2001-2006 Acura RSX, RSX Type-S, Honda Civic Si (2.0L, PRB head, 86mm stock bore).
• Honda/Acura K24A1, K24A2, K24A4: 2002-2008 Honda CR-V, Acura TSX, Honda Accord/Element (2.4L, 87mm stock bore).
• Note: Compatible with stock or bored/sleeved blocks up to 90mm. Not compatible with K20Z3, K20Z4, or K24Z3 engines due to coolant passage and oil return differences. For these engines or K24A/K20Z3 Frankenstein builds, see our separate listing for the K20Z3/K24Z3 Advanced Seal Head Gasket (12251-RBC-004 style, 86-91mm bore), which includes guidance for hybrid conversions requiring block modifications (e.g., oil return channel welding).

Features:

• High-Performance Design: Multi-Layer Steel (MLS) construction with pre-coated stainless steel for superior sealing in turbocharged and high-horsepower applications (drag racing, rallycross, time attack).
• Precision Manufacturing: CNC-machined cylinder bores with a ±0.001-inch tolerance, hand-deburred for perfect fitment. Thickness: 0.033 inches after crush/installation.
• Enhanced Sealing: Compatible with Golden Eagle’s copper O-ring sleeve service, providing robust sealing for high-pressure combustion chambers.
• Versatile Bore Sizes: Available in 86mm to 90mm to match stock or overbored K20A2/Z1 and K24A blocks.
• Proven Reliability: Trusted in top-tier race cars worldwide.

Installation Notes:

• Ensure block and head surfaces are properly decked for optimal sealing, especially for bored blocks.
• For K24A blocks, verify coolant and oil passage alignment with the head (PRB or RBB casting).
• Professional installation recommended for modified or high-performance builds.

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