ARP Head Bolt Kit - Volkswagen/Audi 1.8L DOHC 20V Turbo w/o Tool - 204-3901 303 Series Our 100% water-based formula is

Our 100% water-based formula is glycol-free

function and quality is paramount

45°C) and provides an increase of 20+ hp while retaining factory boost pressure across the core

ZX5-HDR4 kit features ACT's most popular Heavy Duty pressure plate

Serviceability of the intake air filter is also straight forward once the initial installation has been completed

ARP Head Bolt Kit - Volkswagen/Audi 1.8L DOHC 20V Turbo w/o Tool - 204-3901 303 Series Our 100% water-based formula isAll Pro Series bolts are cold forged to ensure molecular integrity, heat treated prior to thread rolling and machining, and meet the ARP ZERO defect ZERO failure quality standard. ARP Pro Series head bolt kits are application specific and designed to deliver superior strength typically associated with competition engines. Pro Series kits are available in standard (8740) 190,000 psi tensile strength material and proprietary (ARP2000) 220,000 psi