This listing is for a New Outboard Extension Kit manufactured by Bay Manufacturing, designed to add 5 inches to your Mercury outboard engine. A 1-year manufacturer warranty is included.
Some newer spacers come painted black, and others come unpainted with a clean sandblasted finish. This kit increases engine shaft length by 5 inches and includes all essential components for a proper conversion.
This 616 Extension Kit fits Mercury V-6, V-8, and Sport Master gearcases and is designed for motors converting 20-inch to 25-inch shaft lengths. Compatible with both 4.8″ and 5.4″ Sport Master units.
Product Features
- Adds 5 inches of shaft length
- Designed for Mercury 175–300 HP 4-Stroke outboards
- Compatible with V-6, V-8, and Sport Master gearcases
- For 20″ to 25″ conversions
- Durable marine-grade materials
- Stainless-steel shafts and hardware
- Bay Manufacturing quality with 1-year warranty
Additional Information
Motor Compatibility – Your Engine Must Match All Listed Specs
HP: 175, 200, 225, 250, 275, 300
Stroke: 4-Stroke
Model: V-6, V-8, Sport Master
Conversion Length: 20″ → 25″
Included Parts
- (1) 5″ housing
- (1) 5″ driveshaft
- (1) 5″ shift shaft
- (1) 5″ water tube
- (5) studs, washers & nuts
- (1) water tube guide
- (2) dowel pins
Shipping Information
Additional shipping fees to Alaska, Hawaii, U.S. Territories, or international destinations will be calculated after checkout. You will receive a PayPal money request by email for any additional charges.
(Some items are excluded from international shipping.)
Customer Support
For questions or to confirm compatibility, please email customerservice@marinepartswarehouse.com .
Please include your engine model or serial number to help confirm proper fitment before ordering.
