JSP Manufacturing® Aftermarket Seadoo Exhaust Manifold Gasket
Our JSP Brand Aftermarket Sea Doo Exhaust Manifold Gasket is compatible with the SeaDoo models listed below. Tested for consistent quality and meets or exceeds original OEM specifications. Please check you part number before placing an order. These gaskets are sold in multiple quantities, please select the correct quantity needed.
- New Aftermarket Exhaust Manifold Gasket
- Compatible with SeaDoo
- OEM quality aftermarket replacement part
- Exact item is pictured
- Quantity: 1 gasket
Replaces the following Part Numbers:
OEM Part #:
420931481
290931481 superseded by 420931481
290931480 superseded by 420931481
SBT #: 41-107-03
WSM #: 007-583
Brand: JSP Manufacturing®
MPN: GK-EX-420931481
Aftermarket Part fits the following Years, Make & Models:
Seadoo PWC:
2004 - 2005 3D RFI 800
1996 - 1997 GSX 800
1999 - 2000 GSX RFI 800
2003 - 2005 GTI LE RFI 800
2004 - 2005 GTI RFI 800
1996 - 1997 GTX 800
1998 - 2002 GTX RFI 800
1997 - 1999 SPX 800
1995 - 1997 XP 800
Seadoo Jet Boat:
1996 - 1999 Challenger 800
1997 - 1999 Challenger 1800
1998 - 1999 Speedster 800
**Reported to fit the above listed years, makes and models, however may fit some additional years, makes and models not listed. Please verify part numbers from original unit, before ordering to help ensure fitment.
We offer a 30-Day Guarantee, if you have any issues with your item, please contact us to resolve the problem.
Return Information
Returns will be the cost of the item purchased, MINUS any shipping costs that we incurred shipping to you, or any return shipping costs. All returns must be in unused, undamaged and unaltered condition. If you have any questions regarding your return, please contact us.
Shipping Information
We guarantee that if you place the order on a business day before 2PM, it will ship out that same day. If placed after 2PM, it will ship out the following business day. Unfortunately, once your order leaves our facility, we are unable to control delays or errors by the shipping carrier.
Please Contact 
At 727-328-8733 If you have any questions or need larger quantities.
Monday - Friday 8AM-5PM Eastern Time
We guarantee that if you place the order on a business day before 2PM (EST), it will ship out that same day. If placed after 2PM (EST), it will ship out the following business day.
Orders received on weekends after 2PM (EST) Friday through 2PM (EST) Monday will ship on Monday. Shipping will start counting Tuesday.
Two-Day Shipping (when available) - shipping days start being counted the day after the shipping carrier receives that package. For example, if they receive the package on Monday before the cutoff time it will be delivered on Wednesday. (Day 1 is Tuesday / Day 2 is Wednesday – does not include the order date). TWO BUSINESS DAYS *Does not include weekends or holidays.
Unfortunately, once your order leaves our facility, we are unable to control delays or errors by the shipping carrier.
Returns will be the cost of the item purchased, MINUS any shipping costs that we incurred shipping to you, or any return shipping costs. All returns must be in unused, undamaged, and unaltered condition. If you have any questions regarding your return, please contact us.