BMW M3 Underdrive Pulley Kit - Dinan - Black - 2008–2013. Unlock additional performance by reducing accessory drag while preserving factory drivability.

Designed for the S65-powered E90/E92/E93 M3, this Dinan kit slows the alternator, water pump, A/C, and power steering to cut parasitic loss, delivering up to 11 hp and 7 lb-ft at 8400 rpm on a stock car. The lightweight crank pulley is CNC-machined from 6061 billet aluminum, black anodized and engraved, and it retains the OEM harmonic damper for engine safety. Includes correctly sized shorter belts. Note: BMW changed to a double-sided belt after 5/2008; use D560-0003 for cars through 5/08 and D560-0004 for 6/08–2013. Backed by a 4-year/50,000-mile warranty.

Features

• Reduces accessory drag for measurable top-end gains
• Underdrives water pump & alternator by 16%
• Underdrives A/C & power steering by 19%
• 6061 billet aluminum, black anodized, engraved
• Retains stock harmonic damper

Have questions or planning an install? Call our Austin shop at 512-982-9393 or our Los Angeles area shop at 562-981-6800. 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