Exhaust Header Pipe Donut Gasket – Fits Polaris & Arctic Cat – Replaces 3610050 / 0612‑667 – Fits XCR, Mountain Cat, Pantera, Thundercat

OVERVIEW

This exhaust header pipe donut gasket restores critical sealing between the exhaust manifold and muffler, eliminating leaks that disrupt engine performance. Designed as a direct OEM-style replacement, it delivers reliable backpressure control using durable, heat-resistant construction. Engineered specifically for select Polaris and Arctic Cat snowmobile platforms, this gasket ensures precise fitment without modification.

ENGINEERING & PERFORMANCE

By securely sealing the joint between the exhaust manifold and muffler, this component eliminates combustion gas leaks that compromise acceleration and throttle response. The reinforced construction maintains consistent pressure tolerance across repeated cold starts and sustained high-load runs, optimizing airflow through mid-size Y-pipe configurations. As a direct-fit replacement, it installs without custom fabrication or adapter hardware, restoring factory-rated exhaust dynamics to legacy chassis designs.

KEY FEATURES

• OE-style exhaust header socket donut gasket
• Seals the connecting joint between exhaust manifold and muffler
• Restores proper backpressure and prevents exhaust gas leaks
• Direct replacement for worn, cracked, or failed original units
• Specifically engineered for mid-size Y-pipe to pipe exhaust setups
• Compatible with select Polaris and Arctic Cat snowmobiles
• Manufactured with durable materials for extended service life
• Made in Taiwan

TECHNICAL SPECIFICATIONS

• Brand: Aftermarket OE Replacement
• Part Name: Exhaust Header Pipe Donut Gasket
• Material: OE-style reinforced material
• Supported Years: 1995–2003
• Compatible Trims: XCR, Mountain Cat, Pantera, Thundercat, ZRT
• Alternate Part Numbers: 3610050, 0612-667

FITMENT

• Arctic Cat Mountain Cat 1000 (2001–2002)
• Arctic Cat Pantera 1000 (2000–2001)
• Arctic Cat Pantera 800 (1998–1999)
• Arctic Cat Thundercat (1998–2002)
• Arctic Cat ZRT 800 (1995–2001)
• Arctic Cat ZRT 800 LE (2001)
• Polaris 600 XCR (1996–1998)
• Polaris 600 XCR SE (1997)
• Polaris 600 XCR SP (1996)
• Polaris 700 XCR (1998–1999)
• Polaris 800 XCR (1999–2003)

WHY RIDERS CHOOSE THIS

Riders rely on this donut gasket because it restores critical exhaust backpressure without requiring custom fabrication or expensive dealer pricing. The OE-style seal design withstands extreme thermal cycling and vibration, ensuring a tight, leak-free compression even after months of operation in freezing trail conditions. By eliminating costly exhaust gaps at the manifold junction, riders maintain consistent throttle response and peak engine efficiency across every winter run. Its precise geometry guarantees flawless compatibility on legacy Polaris and Arctic Cat frames, making it a dependable, cost-effective upgrade for both daily riders and track competitors.