Product Description:
Golden Eagle Machined Honda/Acura K-Series Head Gaskets (K20Z3/K24Z3 Style) are designed for K20Z3 and K24Z3 engines, as well as K24A/K20Z3 Frankenstein builds, utilizing OEM part number 12251-RBC-004 (K20Z3) and compatible with K24Z3 (12251-R40-A01 equivalent). Perfect for stock or modified high-performance applications.
Fitment: Honda K20Z3: 2006-2011 Honda Civic Si (2.0L, RBC head, 86mm stock bore).Acura K24Z3: 2009-2014 Acura TSX (2.4L, R40 head, 87mm stock bore). Hybrid Builds: K24A (e.g., K24A4, K24A2) blocks with K20Z3 heads, when bored/sleeved to 87-90mm and modified for oil return channel alignment. Note: For K24A/K20Z3 builds, the block’s oil return channel must be welded and/or machined to match the K20Z3 head (RBC casting) to prevent leaks, followed by decking for a flat sealing surface. Consult our sales team or any machine shop experienced with K-series hybrids.
Features:High-Performance MLS Construction: Pre-coated stainless steel for superior sealing in turbo and high-horsepower builds. Precision CNC Machining: Bores from 86mm to 91mm, hand-deburred, with ±0.001-inch tolerance. Thickness: 0.030 inches post-crush.Turbo-Ready: Designed for high-pressure combustion chambers, compatible with Golden Eagle’s copper O-ring sleeve service.Coolant Diverter Compatibility: Matches K20Z3 (RBC) and K24Z3 (R40) head coolant passages for optimal flow. Race-Proven: Used in winning drag racing, rallycross, and time attack builds.
Installation Notes:Verify bore size matches block (e.g., 86mm for stock K20Z3, 87mm for stock K24Z3, 88-91mm for bored/sleeved blocks). For K24A/K20Z3 builds, ensure block modifications (e.g., oil passage welding) are performed by a qualified machinist.
