MAHLE Original Positive Stop Valve Stem Seal - 0.275 in Valve Stem - 0.490 in Guide OD - Viton® Rubber (Set of 16) PWR905-28191 Drawing on the company's research

Drawing on the company's research into the use of titanium and aluminum alloys in aerospace the owners' long-standing interest in motor racing led them to produce an initial line of lightweight valves for racing engines in 1978

Patriot Exhaust H7864 Header Flange Pair Chevrolet Small Block 265-400 Tube Diameter 1 5/8" Round Port

Un-Cluttered Operation

Laser-etched logo and AN fitting sizes

and low-profile shoulder-to-head connectors for unsurpassed driver protection

MAHLE Original Positive Stop Valve Stem Seal - 0.275 in Valve Stem - 0.490 in Guide OD - Viton® Rubber (Set of 16) PWR905-28191 Drawing on the company's researchProduct Description: Valve Stem Seal Positive Stop 0. 275 in Valve Stem 0. 490 in Guide OD Viton Rubber Set of 16 MAHLE ORIGINAL produces a broad range of products, including camshaft, connecting rod, and main bearings for a variety of engines. MAHLE ORIGINAL CLEVITE also offers a complete line of diesel engine components, from piston rings and gaskets to complete turbocharger assemblies.