ARP 134-7505 Valve Cover Bolt Kit for CHEVROLET LS Gen III/IV. with 0.750 thick spacer. hex. 8740 ymm_75 They are both forged from

They are both forged from aerospace alloy and heat-treated prior to thread rolling and machining

drivers can use the Sound Remote Controller or the new smartphone app (for iOS and Android) to regulate the valves

Brougham 1967

The Downpipe with Cat (SS) was tested and developed together with the Evolution Line (Titanium) exhaust system and offers an ideal upgrade to the Evolution Line (Titanium) system for further tuning

ARP 134-7505 Valve Cover Bolt Kit for CHEVROLET LS Gen III/IV. with 0.750 thick spacer. hex. 8740 ymm_75 They are both forged fromSpecifications Socket Size(s) 8mm hex Fits Following Engines: Chevrolet Gen III IV LS Series