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.

DRIVETRAIN

Boat Drivetrain

My Inboard Marine is your go-to supply for all your boat drivetrain needs. We carry a variety of inboard mufflers, inboard transmissions and parts ideal for fitting a diverse option of boats, including Mastercraft Mufflers, Borg Warner and Pleasurecraft boat transmission parts. Allow yourself and others to enjoy the sound of the waves as opposed to a noisy boat. Our huge inventory of boat mufflers gives you several choices to decide on. We carry only high-quality products while offering affordable pricing.

We carry interchangeable mufflers, muffler kits, outlet exhausts, and flapper exhaust protector valves as well. We ship products inside and outside the United States. Grab your boat drivetrain products from My Inboard Marine today and experience the difference with our boating solutions.

More Drivetrain Items Coming Soon!

SEAL REAR OIL SEAL OLD STYLE BORG WARNER TRANSMISSIONS 71C - 72C VELVET DROVE BRAND # VD-71C-110 Seal Rear Oil Seal Old Style Borg Warner Transmissions 71C - 72C Velvet Drive Brand # VD-71C-110
18%
$18.05 $21.89
REAR OIL SEAL BORG WARNER 71C & 72C TRANSMISSIONS VELVET DRIVE BRAND OEM VD-71C-110 Fits 71C and 72C This is an Original Velvet Drive Marine Item Oil...
Seal Front Oil Seal Borg Warner Transmissions 71C - 72C Velvet Drive Brand # VD-1000044014 Seal Front Oil Seal Borg Warner Transmissions 71C - 72C Velvet Drive Brand # VD-1000044014
45%
$9.49 $17.18
FRONT OIL SEAL BORG WARNER 71C & 72C TRANSMISSIONS VELVET DRIVE BRAND OEM VD-1000044014 Fits 71C and 72C This is an Original Velvet Drive Marine Item...
Flapper Exhaust Protector Valve 3 Inch
11%
$28.05 $31.49
3 Inch Exhaust Flapper Protective Valve With Stainless Steel Clamp Exhaust protector valve mounts on the outside of 3 in. exhaust tip to prevent backflow...
2000-2006 Muffler Mastercraft - 3.5"  Inlet w/40° Angle - 3.5" Outlet - SS19/PS190/205/209 OEM 252033 2000-2006 Muffler Mastercraft - 3.5"  Inlet w/40° Angle - 3.5" Outlet - SS19/PS190/205/209 OEM 252033
28%
$545.00 $758.36
MUFFLER MASTERCRAFT 2000 - 2006 3.5" Inlet with 40° Angle 3.5" outlet SS19/PS190/205/209/PS197 OEM 252033 Overall Length is approximately 26" Barrel Diameter is approximately 5-1/8"...
2008-2012 Muffler Mastercraft - 3-1/2" Inlet 30° Angle - 3-1/2" Outlet 80° Angle Vertical X1 OEM 252023
34%
$539.00 $811.46
 2008-2012 MUFFLER MASTERCRAFT SILENT MASTER OPT. 3.5" Inlet w/80° angle - 3.5" outlet  w/30° angle Vertical X1/200/215/230/235/245/255 Euro Part# 252023 Manufactured by Ultra Marine. Easy...
Muffler Interchangeable Angled 3-1/2 Inch 60° O.D. Inlet With 3 Inch O.D. Straight Outlet 26 Inches Long OEM UM-0429
27%
$338.00 $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 Supra-Moomba 104378 Interchangeable Angled 3-1/2 Inch 60° O.D. Inlet 3 Inch O.D. Straight Outlet 34 Inches OEM 4207 Muffler Supra-Moomba 104378 Interchangeable Angled 3-1/2 Inch 60° O.D. Inlet 3 Inch O.D. Straight Outlet 34 Inches OEM 4207
44%
$349.00 $621.69
Ultra Marine - Muffler Supra-Moomba 104378 Muffler Number: 104378 Supra-Moomba Interchangeable - PORT or STARBOARD UM-4207 Angled 60 Degree 3-1/2" Inlet With 3" Straight Outlet 33"...
Oil Cooler Transmission Standard Indmar 5 Inch Cooler 3/8 Inch Fittings OEM 86-5001 Oil Cooler Transmission Standard Indmar 5 Inch Cooler 1-1/4 Inch O.D. Barbs 3/8 Inch Fittings OEM 86-5001
17%
$132.25 $159.99
OIL COOLER TRANSMISSION 5" STANDARD COOLER INDMAR BRAND 5 inch Standard Cooler with 3/8" Fittings Replaces Crusader 97112 Replaces Marine Power 0440-001 Replaces Pleasurecraft Marine...
Dipstick For All Borg Warner Velvet Drive Direct Drive Transmissions Expandable OEM Velvet Drive # VD-1017559001 Dipstick For All Borg Warner Velvet Drive Direct Drive Transmissions Expandable OEM Velvet Drive # VD-1017559001
5%
$86.50 $91.51
Velvet Drive Direct Drive Transmission Dipstick Original Velvet Drive OEM Expandable Adjustment Velvet Drive 1:1, 1.52:1 through 2.91:1 ratios Velvet Drive Direct Drive Transmission Dipstick...
OEM Indmar damper plate fits GM 5.7L, 6.0L, 6.2L & 8.1L marine engines with 14 in. flywheels. OEM Indmar damper plate fits GM 5.7L, 6.0L, 6.2L & 8.1L marine engines with 14 in. flywheels.
4%
$295.00 $306.12
OEM Indmar damper plate fits GM 5.7L, 6.0L, 6.2L & 8.1L marine engines with 14 in. flywheels. ZF Hurth & Velvet Drive Transmissions Indmar flywheel...
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 Interchangeable Angled 3-1/2 Inch 45° O.D. Inlet With 3-1/2 Inch O.D. Straight Outlet OEM UM-288MUFFLER
24%
$324.00 $428.05
Ultra Marine - Muffler Aftermarket Interchangeable UM288MUFFLER Angled 45 Degree 3-1/2" Inlet With 3-1/2" Straight Outlet 26" Tip to Tip 3-1/2" Inlet - 3-1/2" Outlet Used...
1994-1999 Muffler Mastercraft - 3.5" Inlet  w/45° Angle  - 3.5" Outlet - SS19/SS190B/190/205 OEM 252026
40%
$449.00 $743.85
1994-1999 MUFFLER MASTERCRAFT 3.5" Inlet  w/45° Angle - 3.5" outlet SS19/SS190B/190/205 OEM 252026 MUFFLER-3.5" 45° ELBOW SS19/SS19OB/190/205 '94 - '99 26.5" Approximately OAL Barrel Length...
Muffler Supra Moomba Skiers Choice 3.5" Inlet W/60° Angle  - 3" Outlet OEM 100700
12%
$475.00 $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...
MUFFLER KIT SUPRA MOOMBA SKIERS CHOICE KIT -340 Cayalist Muffler w/(2) Rubber Elbows OEM 107208
16%
$1,149.00 $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...
1994-1997 Muffler Mastercraft - 3.5" Offset Inlet/Outlet MS200/MS225 VRS - 17" OAL OEM 252029
40%
$469.00 $784.33
MUFFLER MASTERCRAFT 1994 - 1997 3.5" offset  inlet/outlet MS200/MS225 VRS - 17" OAL  OEM 252029 Fits both sides - Starboard & Port MUFFLER - 3.5"...
Damper Plate Ford Small Block For Velvet Drive Transmissions OEM R140001
11%
$301.21 $339.03
Damper Plate Ford Small Block For Velvet Drive Transmissions OEM R140001 - Replaces Indmar 882015! OEM Crusader damper plate - FITS Indmar Ford Small Block...
1990-1993 MUFFLER MASTERCRAFT LIFT - 3" INLINE LIFT 60° ANGLE - 3" OUTLET 24"L OEM 252015
31%
$495.00 $720.53
MUFFLER MASTERCRAFT LIFT 1990-1993 + 3" INLINE LIFT 60° ANGLE - 3" OUTLET APPROXIMATELY 26" OVERALL LENGTH OEM 252015 Part# 252015 3" Inlet & 3"...
O-Ring Shift Spool Borg Warner Transmissions 71C - 72C Velvet Drive Alto 010210B
$1.50
SHIFT SPOOL O-RING BORG WARNER 71C & 72C TRANSMISSIONS Fits 71C and 72C  Alto 010210B This replaces PCM / Crusader R047010
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...
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