PLEASE NOTE - Some products are not immediately available. If your order will be delayed, we will e-mail you or call you and let you know.
E-MAIL US HERE about availability and we will respond quickly! We ship same day if your order was placed by 1:00 PM EST during normal business hours BASED ON AVAILABILITY.
NEXT DAY SHIPPING NOTE - Please see our Shipping Policy SATURDAY OR SUNDAY DELIVERY IS NOT AN OPTION.

MUFFLERS - SILENCERS by Ultra Marine

Boat Mufflers

Do you need a silencer/muffler for your boat? At My Inboard Marine, we have several boat muffler options available. Everything from muffler kits to replacement mufflers. We carry aftermarket mufflers along with original factory equipment.

My Inboard Marine carries brand names including Mastercraft, Supra Moomba, and Tige’. We are confident we carry the parts you are looking for with huge discounts that overpower the competition. We make it our priority to specifically carry top-quality equipment while delivering first-rate customer service.

Have questions about our products? We have answers! Reach out to one of our staff members by emailing us at sales@myinboardmarine.com or by calling us at 803-766-8586. Our professional marine service technicians will respond to you quickly! Grab your boat mufflers from the industry-leading online marine store today. Pro Tip: Get your part number either off the old muffler or from your engine/boat manufacturer/dealer if you are not sure!

For Warranty Information, click HERE for the PDF

PLEASE NOTE: Ultra Marine Mufflers are MADE TO ORDER.

Your order will normally ship within 4 BUSINESS days after you order.

Scroll down for all Mufflers

Mastercraft Muffler Silent Master for LY6 Part# 252001 - Outside
32%
$435.00 $635.26
Mastercraft Muffler Silent Master for LY6 Part# 252001 - Outside 10 ° Angled 3-1/2" Offset Inlet with 3-1/2" Outlet These are the mates to the UM-252000 Mufflers...
Mastercraft Muffler Silent Master for LY6 - INSIDE Part# 252000 - Inside
28%
Sold Out
Mastercraft Muffler Silent Master for LY6 - INSIDE Part# 252000 - Inside 10 ° Angled 3-1/2" Offset Inlet with 3-1/2" Outlet  These are the mates to the UM-252001...
Muffler Supra Moomba Skiers Choice 0437 - 3.5" In/Out Inline Approx 15" Overall Length OEM 101422
11%
$398.32 $450.07
MUFFLER SUPRA MOOMBA SKIERS CHOICE 0437 3.5" inlet and 3.5" outlet inline Approx 15" overall length OEM 101422 Shipping Dimensions: 8x8x17 Manufactured by Ultra Marine....
2011-2012 Muffler Mastercraft - 3.5" Inlet/Outlet Port 6.0/6.2 Liter OEM 252082
32%
$620.83 $907.97
MUFFLER MASTERCRAFT 2011 - 2012 3.5" inlet/outlet Port 6.0/6.2 Liter OEM 252082 MUFFLER - PORT 6.0/6.2 Manufactured by Ultra Marine. Easy to install! Ultra Marine...
2011-2012 MUFFLER MASTERCRAFT - 3.5" inlet/outlet -Starboard 5.7 L ILMOR Engine OEM 252071
17%
$478.15 $573.20
MUFFLER MASTERCRAFT 2011 - 2012 3.5" inlet/outlet Starboard 5.7 L ILMOR Engine OEM 252071 The body is approx. 6-1/8” in diameter and is 9-1/4” long...
2014 Muffler Mastercraft - 5.7 Standard X2 Starboard Side 250044BS
17%
$505.65 $605.69
Mastercraft Muffler 2014 5.7L Standard Starboard Side Muffler X2 Part# 250044BS Click HERE for Full Kit Part# 250044B includes both mufflers. Manufactured by Ultra Marine. Easy...
2014 Muffler Mastercraft - 5.7 Standard X2 Port Side 250044BP
17%
$505.65 $605.69
Mastercraft Muffler 2014 Prostar 5.7L Standard X2 Port Side Muffler X2 Part# 250044BP Full Kit Part# 250044B includes both mufflers. Manufactured by Ultra Marine. Easy to install! Ultra...
Muffler Interchangeable Angled 3-1/2 Inch 60° O.D. Inlet With 3-1/2 Inch O.D. Straight Outlet 43 Inches Long OEM UM-288-3535
27%
$353.00 $481.68
Ultra Marine - Muffler Aftermarket Interchangeable UM-288-3535 Angled 60 Degree 3-1/2" Inlet With 3-1/2" Straight Outlet 43" Tip to Tip 3-1/2" Inlet - 3-1/2" Outlet Used...
2004-2006 Muffler Kit Mastercraft - 3.5" MCX 280 Twin Port OEM 253016
34%
$1,124.32 $1,699.83
MUFFLER MASTERCRAFT 2004-2006 3.5" MCX 280 Twin Port Side OEM 253017 MUFFLER-KIT 280 TWIN MCX STBD 04 - 06 3.5 INCH OUTLET  Manufactured by Ultra...
2014 Muffler Mastercraft - 5.7 Standard 214V - X14V Starboard Side UM-250047AS
17%
$503.98 $605.69
Mastercraft Muffler 2014 Prostar 5.7L Standard 214V &  X14V Starboard Side Muffler 214V - X14V Part# 250047AS Full Kit Part# 250047A includes both mufflers. Manufactured by Ultra...
1982-1988 Muffler Mastercraft - 3" Inlet 60° Angled Elbow 3" Outlet OEM 25-0009
45%
$393.00 $719.99
MUFFLER MASTERCRAFT 1982 through 1988 - 41.5" Approximate Overall Length 3" INLET HORIZONTAL 60° ANGLED ELBOW - 3" OUTLET OEM 25-0009 Part# 25-0009 3" Inlet...
Fiberglass Exhaust Reducer 3.5 Inch to 4 Inch Centek Industries 1200222
8%
$125.00 $135.91
3.5 inch to 4 inch Fiberglass Exhaust Reducer Centek Industries 1200222 SOLD EACH 3.5" to 4" Fiberglass Exhaust Reducer Connects 3.5 in. inside diameter hose...
Muffler Mastercraft PORT Indmar Engines LSA Only Super Charged 6.2L OEM 252076P
29%
$599.00 $849.33
MUFFLER MASTERCRAFT LSA INDMAR SUPERCHARGED ENGINES ONLY PORT SIDE - 252076 Click HERE if you need the Starboard Side. Manufactured by Ultra Marine. Easy to...
Muffler Mastercraft Starboard Indmar Engines LSA Only Super Charged 6.2L OEM 252077STBD
27%
$599.00 $823.69
MUFFLER MASTERCRAFT LSA INDMAR SUPERCHARGED ENGINES ONLY STARBOARD SIDE Click HERE if you need the Port Side. Manufactured by Ultra Marine. Easy to install! Ultra...
Muffler Mastercraft - 3.5" Inlet/Outlet 2008 LY6 280 OAL Approx 12.25 OEM 252003
30%
$550.00 $784.33
MUFFLER MASTERCRAFT 2008 ONLY AND ONLY FOR THE LY6 3.5" Inlet & Outlet OEM 252003 Fits both sides - Starboard & Port MUFFLER - 3.5" STRAIGHT...
Neoprene Exhaust Tip Gasket Corsa® Performance 10197
24%
$10.95 $14.48
The gasket is made to seal between Corsa 4 in. exhaust tip & the boat's transom. Thru hull exhaust tip gasket For 4 inch exhaust...
Rolled Edge Exhaust Tips With Flapper - 4 Inch Corsa® Performance 11030 Rolled Edge Exhaust Tips With Flapper - 4 Inch Corsa® Performance 11030
13%
$349.00 $399.99
Pair of polished stainless steel bull nose exhaust tips fit inboard boats with 4 in. exhaust. 90 degree flange exhaust tips For use with 4...
4 Inch Angle Cut Transom Exit Exhaust Tips With Flapper Corsa Performance 11000 4 Inch Angle Cut Transom Exit Exhaust Tips With Flapper Corsa Performance 11000
1%
$394.00 $399.99
Pair of polished stainless steel thru hull exhaust tips fit inboard boats with 4 in. exhaust. 90 degree flange exhaust tips Sold as a pair...
45° Straight Cut Pipe Exhaust Outlet With Angled Flange 3-1/2" WITH BAFFLE! 45° Straight Cut Pipe Exhaust Outlet With Angled Flange 3-1/2" WITH BAFFLE!
31%
$191.19 $277.53
45° Straight Cut Pipe Exhaust Outlet With Angled Flange 3-1/2" WITH BAFFLE! SOLD EACH! 3-1/2" 304 Stainless Steel Straight Thru Hull Incorporates an internal muffler...
2005-2006 Muffler Mastercraft - 8.1 Crusader 245 SS OEM 253023A
37%
$1,045.88 $1,668.78
MUFFLER MASTERCRAFT 2005-2006 8.1 Crusader 245 SS OEM 253023A Manufactured by Ultra Marine. Easy to install! Ultra Marine Fine fiberglass and highly fire-retardant resins make...
Items 61 to 80 of 99 total