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The GP-1 20W-50 is ideal for high performance flat tappet
1999-2013 Chevrolet Silverado 1500
1/16-3/8 in Grip Range
2A/1 and SFI 3
Del West applies in-house developed thermally sprayed coatings to protect against wear on the stem
Holley Ultra XP Replacement Main Body 950 CFM HC Gray 12199901 The GP-1 20W-50 is idealWe all know things can happen at the track. While tuning your ride in for the perfect pass, screw holes could become worn or cross threaded. Rather than replacing your entire carburetor, Holley offers replacement main bodies for your Ultra XP. These aluminum main bodies are the identical units that we use to build the Ultra XP carburetors that you already know and love. Offered in sizes ranging from 600 cfm 950 cfm, Holley has you covered. SPECS:
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