Aftermarket 4-Tec Head Stretch Bolt Set 420641110 for Sea-Doo GTI GTX RXP RXT Challenger Speedster 2002-2017

This is a set of 8 cylinder head stretch bolts (Torx flanged, M11 x 147) for Sea-Doo 4-Tec jet ski engines, replacing OEM 420641110 and the later 290641110. Head bolts stretch each time the engine goes through a heat cycle, and measuring an old bolt will not tell you how much clamping strength it has lost. Use new ones every time the head comes off to avoid torque loss and possible engine failure.

Fits

• Sea-Doo GTI / GTI 130 / GTI 155 / GTI SE / GTI LTD (2006-2017)
• Sea-Doo GTS / GTS 130 / GTS Pro 130 (2011-2016)
• Sea-Doo GTX 4-TEC / GTX 155 / GTX 215 / GTX iS / GTX S / GTX LTD (2002-2017)
• Sea-Doo GTR 215 / GTR 230 / GTR X 230 (2012-2017)
• Sea-Doo RXP / RXP 215 / RXP-X 255 / RXP-X 260 / RXP-X 300 (2004-2017)
• Sea-Doo RXT / RXT 215 / RXT 260 / RXT iS / RXT-X 260 / RXT-X 260 aS / RXT-X 300 (2005-2017)
• Sea-Doo Challenger 180 / 230 / 1800 (2005-2012)
• Sea-Doo Speedster 150 / 200 / Wake (2004-2012)
• Sea-Doo Islandia 220 / Islandia SE (2006-2009)
• Sea-Doo 210 Challenger / 210 SP / 210 Wake (2010-2012)
• Sea-Doo 230 Challenger / 230 SP / 230 Wake (2008-2012)
• Sea-Doo 205 Utopia (2008-2009)

What's included

• 8 Torx flanged stretch bolts, M11 x 147

Replaces OEM part numbers

420641110 · 290641110

Not sure it fits your ski? Call or text 954-914-6465 with your hull ID (HIN) and we'll confirm before you order.