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The Supertech exhaust valve guide for Nissan SR20DET and RB26 applications is specified for a 7mm stem and fits those engine families. Supplied to replace worn exhaust guides, it helps retain valve alignment and consistency in refurbished heads. Verify your SR20DET or RB26 engine details and stem clearance prior to installation to ensure compatibility with the head.
Supertech Nissan SR20DET / RB26 Exhaust Valve Guide 7mm Stem
