The BTR-88670 timing chain dampener is engineered for GM Gen III and Gen IV LS engines using the LS2/LS3/LS7-style timing cover and single-row timing-chain layout. It replaces GM 12588670 and provides effective control of timing-chain whip in performance and OE-style applications.

Brian Tooley Racing BTR-88670 Includes:

• One plastic timing-chain dampener

Brian Tooley Racing BTR-88670 Features:

• Direct-fit replacement for GM 12588670 used in LS2/LS3/LS7 timing-chain assemblies
• Compatible with GM Gen III/IV LS blocks using the LS2-style timing cover bolt pattern
• Plastic dampener body designed to reduce timing-chain whip and extend chain and sprocket life
• Suitable for stock, upgraded, or performance camshaft combinations using single-row chain systems

Brian Tooley Racing BTR-88670 Notes:

• Sold individually; one dampener required per timing assembly
• Not compatible with early LS1/LS6 timing covers unless converted to LS2-style front cover and chain path
• Inspect chain, guides, and tensioner when replacing the dampener to ensure full system reliability