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

Muffler Interchangeable Angled 3-1/2 Inch 60° O.D. Inlet With 3 Inch O.D. Straight Outlet 26 Inches Long OEM UM-0429
31%
$321.00 $465.27
Ultra Marine - Muffler Aftermarket Interchangeable UM-0429 Angled 60 Degree 3-1/2" Inlet With 3" Straight Outlet 26" Tip to Tip 3-1/2" Inlet - 3" Outlet...
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
36%
$300.00 $465.99
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...
Muffler Interchangeable Angled 3-1/2 Inch O.D. Inlet With 3 Inch O.D. Straight Outlet 46 Inches Long OEM UM-288-3530
36%
$285.00 $442.99
Ultra Marine - Muffler Aftermarket Interchangeable UM-288-3530 Angled 3-1/2" Inlet With 3" Straight Outlet 46" Tip to Tip Was used on some Moomba's mid-1990 to...
Muffler Interchangeable Straight 3 Inch O.D. Inlet & 3 Inch O.D. Straight Outlet 41 Inches Long OEM UM-288-3000
38%
$259.00 $415.99
Ultra Marine - Muffler Aftermarket Interchangeable UM-288-3000 Straight 3" Inlet With 3" Straight Outlet 41" Tip to Tip 35" Barrel Length The O.D. of the...
Muffler Interchangeable Ultra 3 Inch Straight Inlet With 3 Inch Straight Outlet 13 Inches Long OEM UM-289-3000 Muffler Interchangeable Ultra 3 Inch Straight Inlet With 3 Inch Straight Outlet 13 Inches Long OEM UM-289-3000
45%
$205.00 $369.99
Ultra Marine - Muffler Aftermarket Interchangeable UM-289-3000 13" Total length 3" inlet/outlet Also available in 3-1/2" & 4" in - out Straight 3" Inlet with...
Muffler Kit Supra Moomba Skiers Choice 3.5" Inlet W/15° Angle  - 3.5" Outlet OEM 100701
19%
$1,095.00 $1,354.86
MUFFLER KIT SUPRA MOOMBA SKIERS CHOICE Two 3.5" inlets w/15° angle Two 3.5" outlets Does NOT come with the 2 Rubber Elbows part number 111417 OEM...
MUFFLER KIT SUPRA MOOMBA SKIERS CHOICE KIT -340 Cayalist Muffler w/(2) Rubber Elbows OEM 107208
15%
$1,162.11 $1,363.86
MUFFLER KIT SUPRA MOOMBA SKIERS CHOICE KIT Does NOT include the 2 rubber elbows! 340 Catalyst Muffler - 3.5" In / 3.5" Out 39° Angle...
Muffler Mastercraft - 3.0" Offset Inlet/Outlet 17" OAL OEM 252019
30%
$475.16 $674.31
MUFFLER MASTERCRAFT STRAIGHT 17" Overall Length. 3.0" offset  inlet/outlet - Note: 3" (3 Inch Inlet/Outlet) 17" OAL  OEM 252019 Manufactured by Ultra Marine. Easy to...
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...
MUFFLER MASTERCRAFT ANGLED 3-1/2" 60° INLET 3-1/2 " STRAIGHT OUTLET 38" LONG 250016
8%
$372.34 $406.34
Mastercraft Muffler Part# 250016 60 Degree Angled 3-1/2" Inlet With 3-1/2" Straight Outlet 3-1/2" Angled 60 Degree Inlet 3-1/2" Straight Outlet 38 Inches long - approximately Manufactured...
Mastercraft Muffler Silent Master for LY6 - INSIDE Part# 252000 - Inside
28%
$455.05 $635.26
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...
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...
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...
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!...
Muffler Supra Moomba Skiers Choice 0437 - 3.5" In/Out Inline Approx 15" Overall Length OEM 101422
14%
$374.00 $435.75
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....
Muffler Supra Moomba Skiers Choice 3.5" Inlet W/60° - 3.5" Outlet OEM 104425
13%
$528.22 $606.57
MUFFLER SUPRA MOOMBA SKIERS CHOICE + 3.5" inlet w/60° Angle 3.5" outlet Overall Length Approximately 26" OEM 104425 Shipping Dimensions: 30x14x11 Manufactured by Ultra Marine....
Muffler Supra Moomba Skiers Choice 3.5" Inlet W/60° Angle  - 3" Outlet OEM 100700
16%
$455.20 $542.69
MUFFLER SUPRA MOOMBA SKIERS CHOICE 3.5" inlet w/60° angle 3" Outlet Shipping Dimensions: 30x14x11 OEM 100700 Manufactured by Ultra Marine. Easy to install! Ultra Marine...
Ultra Marine - Muffler Supra-Moomba BOOMERANG! Part Number: 100270
23%
$401.03 $521.93
Ultra Marine - Muffler Supra-Moomba BOOMERANG! Part Number: 100270 Muffler Number: 100270 Supra-Moomba Boomerang UM-100270 Angled 60 Degree 3" Inlet With 3" Straight Outlet 3" in...
MUFFLER TIGE' - 3" inlet w/90°angle - 3.5" outlet - Port - 6" body length OEM - UM-TB4178-P
14%
$452.86 $525.31
MUFFLER TIGE' - PORT - LEFT SIDE 3" inlet w/90°angle 3.5" outlet Port 6" body length OEM TB4178-P Shipping Dimensions: 30x14x11 Manufactured by Ultra Marine....
MUFFLER TIGE' - 3" inlet w/90° angle - 3.5" outlet - Starboard - 5.5" body length OEM - UM-TB4178-S
14%
$452.86 $525.31
MUFFLER TIGE' - STARBOARD SIDE 3" inlet w/90° angle 3.5" outlet Starboard 5.5" body length OEM - TB4178-S Shipping Dimensions: 30x14x11 Manufactured by Ultra Marine....
MUFFLER TIGE' - 3" inlet w/extended 76° angle - 3.5" outlet - 27" body length OEM - 4087-T
38%
$419.00 $680.83
MUFFLER TIGE 3" inlet w/extended 76° angle 3.5" outlet 27" body length OEM - 4087-T Shipping Dimensions: 12x12x48 Manufactured by Ultra Marine. Easy to install!...
Muffler Tige' - 3" Inlet W/Extended 90° Angle - 3.5" Outlet - 15" Body Length OEM - TB4087
16%
$477.05 $569.09
MUFFLER TIGE' 3" inlet w/extended 90° angle 3.5" outlet 15" body length OEM TB4087 Shipping Dimensions: 12x13x38 Manufactured by Ultra Marine. Easy to install! Ultra...
Muffler Tige' - 3" Inlet W/Extended 90° Angle - 3.5" Outlet OEM - UM-4178-T Muffler Tige' - 3" Inlet W/Extended 90° Angle - 3.5" Outlet OEM - UM-4178-T
24%
$402.86 $531.80
MUFFLER TIGE' 3" inlet w/extended 90° angle 3.5" outlet OEM - UM-4178-T Shipping Dimensions: 12x13x37 Manufactured by Ultra Marine. Easy to install! Ultra Marine Fine...
Muffler Tige' - D4028 - Silent Rider V-Drive Dual 4" Inlets  - Dual 3.5" Outlets OEM - D4028
20%
$1,279.00 $1,599.00
MUFFLER TIGE' CUSTOM Dual 4" Inside Diameter Inlets - Dual 3.5" Inside Diameter Outlets The outlets are extended approx. 13" out from the main cylinder....
Neoprene Exhaust Tip Gasket Corsa® Performance 10197
20%
$9.95 $12.49
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...
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...
Outlet Exhaust 3-1/2" Straight Flange Exhaust <b>No Baffle-Muffler</b> Outlet Stainless Steel No Flapper Needed
20%
$199.00 $249.00
45° Straight Cut Pipe Exhaust Outlet With Straight Flange 3-1/2" NO BAFFLE! SOLD EACH! 3-1/2" 304 Stainless Steel Straight Thru Hull - NO INTERNAL BAFFLE...
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...
Salisbury 4 Inch Flapper with Hose Clamp Corsa® Marine 10840
20%
$28.51 $35.79
Replacement CORSA branded Salisbury style exterior flapper. Salisbury 4 in. Flapper with Hose Clamp Replaces Corsa Performance 10072 Sold individually - Sold Each
Verna Ski Inline Muffler - 3 Inch Centek Industries 1000216
13%
$294.00 $337.23
Fiberglass wet exhaust muffler is designed to reduce the noise of gasoline inboard engines in ski boats. Centek Verna Ski muffler Fiberglass construction 45 degree...
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