Audi S5 Fuel Pump - APR - High Pressure - 08-12. Purpose-built HPFP upgrade for the 2008-2012 S5 4.2L FSI that increases available fuel volume while maintaining OEM-like operation.

APR increases displacement by 41% by enlarging the internal bore, helping keep rail pressure steadier when demand rises. Internals are machined to .00004"/.00005" tolerances. The plunger and barrel use heat-treated stainless; the plunger is DL C-coated. A matched spring helps prevent float, all seals are replaced, and the tip retains the factory pivoting head to reduce cam follower wear. Each pump is assembled in-house, tested on APR's rig, and built with genuine Hitachi hardware.

Features

• 41% more HPFP fuel volume
• .00004"/.00005" tolerances
• DLC-coated plunger; heat-treated stainless
• Matched spring and new internal seals
• In-house assembly and testing; Hitachi components

Have questions or planning an install? Call our Austin, Texas shop at 512-982-9393 (TX) or our Los Angeles, California area shop at 562-981-6800 (CA). We offer installation and customization services at both locations.

Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov