NGK 3764 BKR6EIX-11 Spark Plug

Ford Cosworth pistons are developed for mild to high tune, mainly for hill climb or road use. Designed by ZRP engineers and manufactured in Germany from high silicon, low expansion 4032 (T6) alloy. This allows the engine builder to run tighter piston to bore clearance, thus producing a better seal. This minimizes cold start knock noise, common in engines with forged pistons, providing quiet operation and low oil consumption. We have chosen a full round skirt design with lower reinforcement band, with oversized and deeper valve pockets to allow for the use of high lift camshaft profiles. They have offset pins for quiet operation and the piston pins are made from 9310 alloy. Other features include anti-detonation grooves to protect the top rings, gas pressure accumulator groove for better ring sealing and vibration relief. Premium Japanese quality 1.00mm x 1.20mm x 2.50mm ring package included. Product features and design Anti-detonation grooves for extended life and performance Gas pressure accumulator groove in the second ring land for extended life. Horizontal grooves in the pin bore designed to allow oil to enter between the piston pin and the pin bore area. CNC precision machined ring grooves 4032-T6 high silicon/low expansion alloy Pin bores are honed Clip cut-outs on the intake side edge Full round skirt design with lower reinforcement band for high HP/Boost applications Valve pockets designed to allow for oversized valves and high lift camshafts Pistons designed to optimize compression for increased engine life and higher horsepower potential Optional coatings offered on request "Blast Off Bronze" thermal barrier coating Moly side skirt and under crown "Stealth Black" coating