RYANSTAR RACING Exhaust Manifold Clamp 11518860 - OEM Fit for GM V6/V8, External Band Repair

RYANSTAR RACING Exhaust Manifold Clamp 11518860 / 917-107 is an external repair clamp that reseals a leaking exhaust manifold to the cylinder head without removing broken studs.

If a cracked or stripped exhaust stud is causing exhaust leaks on GM V8 or V6 engines, this clamp provides a fast, low-cost repair by applying an external band that pulls the manifold tight to the head. Built to OEM fitment numbers 11518860 and 917-107, the clamp is designed for many GM small‑block and LS-series engines used in Silverado, Sierra, Yukon, Denali, Escalade and Hummer models. The product emphasizes durable materials and precision manufacturing to restore sealing where studs have failed.

How does this clamp restore a leaking exhaust without removing broken studs?

The clamp wraps around the manifold flange and tightens to compress the mating surface against the cylinder head, recreating the seal without chasing or extracting damaged studs. That avoids time‑consuming stud removal and reduces labor and parts cost.

• External band design applies uniform pressure along the flange.
• Installs over the existing manifold—no stud extraction required.
• Works with damaged, snapped, or corroded studs to reseal the joint.

Which engines and vehicles does this RYANSTAR RACING part fit?

Fitment follows the listed engine codes and OEM reference numbers, covering multiple GM families from small‑block V8s to LS series and later LT engines. Confirm compatibility with your vehicle’s engine code before purchase.

• Fits engine codes including L20, L31, L33, L59, L76–L99, LC9, LFA, LH6–LH8, LM4–LM7, LQ4–LQ9, LS1–LS9, LSA, LT1–LT5, LY2–LY6, LZ1 and LSX variants.
• Common applications: Chevrolet Silverado, GMC Sierra, Yukon, Denali, Cadillac Escalade, Hummer models.
• OEM cross numbers referenced: 11518860 and 917-107—verify against your repair manual.

What materials and quality checks ensure durability?

The clamp is made from corrosion‑resistant metal with precision-formed components and fasteners to withstand exhaust temperatures and vibration. The manufacturer states the item is processed to meet OEM standards and undergoes multi‑level inspections before shipping.

• High‑grade metal construction for heat and stress resistance.
• Precision machining for consistent clamp tension and fitment.
• Quality control inspections at multiple production stages.

How simple is installation for DIYers and shops?

Installation is straightforward for anyone with basic hand tools and access to the manifold area. The clamp slips over the manifold flange and bolts down, compressing the joint; it’s often faster than replacing studs and reassembling the manifold.

• No stud removal or head work typically required.
• Standard sockets/wrenches are usually sufficient for tightening.
• Reduces vehicle downtime compared with stud replacement.

Who is this for? This RYANSTAR RACING exhaust manifold clamp is aimed at automotive technicians, DIY mechanics, and fleet maintainers who need a reliable, cost‑effective fix for exhaust leaks caused by broken or corroded manifold studs on GM V‑series and LS‑family engines. If you require a fast repair that restores a sealed exhaust joint without costly stud extraction, this clamp is a practical option—confirm your engine code and OEM cross number before ordering.