The 16638-PH3-S00 is a genuine Honda OEM fuel injector cushion ring, designed to seal the top portion of the fuel injector where it connects to the fuel rail. This precision-molded insulator helps prevent fuel leaks, ensures proper injector alignment, and dampens vibration for smoother operation. A must-replace item during any injector service or EFI system rebuild.
Key Features:
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100% Genuine Honda OEM fuel injector insulator
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Seals injector to fuel rail to prevent leaks and ensure fuel pressure
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Dampens vibration and noise for smooth engine performance
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Made from fuel- and heat-resistant rubber compound
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Direct-fit replacement — no trimming or modification needed
Compatible With:
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1988–1991 Honda Civic / CRX (D15B2, D16A6)
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1990–1993 Acura Integra (B18A1)
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Other Honda/Acura EFI engines — confirm with VIN or service manual
Specifications:
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Part Number: 16638-PH3-S00
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Condition: Brand New
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Quantity: 1 Cushion Ring
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Material: High-temp fuel-resistant rubber
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Use Case: Top injector insulator between injector and rail
Why Buy from Elite Race Fab?
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100% genuine Honda OEM EFI components
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Fast, secure shipping from fuel system specialists
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Trusted by tuners, builders, and OEM restoration pros nationwide
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Real support — no guesswork, just exact-fit parts that work