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.

IMPORTANT - OUR OFFICES WILL BE CLOSED FOR SCHEDULED MAINTENANCE ON THURSDAY, NOVEMBER 21st & FRIDAY, NOVEMBER 22nd.
ALL ORDERS PLACED ON THURSDAY, NOVEMBER 21st THROUGH SUNDAY, NOVEMBER 24th WILL BE PROCESSED WHEN WE OPEN MONDAY, NOVEMBER 25th.

WE APPRECIATE YOUR PATIENCE AS WE IMPROVE OUR ABILITY TO SERVE YOU BY UPDATING OUR INTERNAL COMPUTER SYSTEMS!

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!

Gasket - Seal Kit Transmission 71C - 72C Velvet Drive 023801B
17%
$69.50 $83.56
OEM kit includes all gaskets & seals needs to reseal Velvet Drive 71C & 72C marine transmissions. Gasket & Seal Kit - All 71C and...
Gasket - Oil Seal Kit Transmission 40A and 40I PCM Transmissions OEM PCM RK173058
12%
$194.00 $220.65
PCM Gasket and Oil Seal Kit PCM Transmission Gasket and Seal Kit Includes the gaskets and seals needed to rebuild PCM brand transmissions For PCM...
TRANSMISSION COMPLETE BORG WARNER 1:1 VELVET DRIVE 71 C
15%
$7,200.00 $8,450.00
TRANSMISSION COMPLETE BORG WARNER 1:1 VELVET DRIVE 72 C This is a NEW transmission not Rebuilt. This is a NEW 72C (10-18) transmission for 454 Big...
TRANSMISSION COMPLETE BORG WARNER 1:1 VELVET DRIVE 71 C Transmission Complete Borg Warner 1:1 Velvet Drive 71 C 1017-000-004
10%
$4,155.00 $4,600.00
TRANSMISSION COMPLETE BORG WARNER 1:1 VELVET DRIVE 71 C This is a NEW transmission not Rebuilt! Inline Borg Warner marine transmission Direct drive 1:1 ratio 71C...
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...
2013-2014 Muffler Mastercraft- 3.5" Inlet/Outlet - Port Universal  OEM 252087P
33%
$678.68 $1,007.30
MUFFLER MASTERCRAFT 2013 - 2014 3.5"inlet/outlet Port Universal OEM 252087P MUFFLER - PORT SIDE 2013 - 2014 Manufactured by Ultra Marine. Easy to install! Ultra...
2008-2012 Muffler Mastercraft Angled 3-1/2" Offset Inlet At 20° Angle Vertical 280-MCX 252002
34%
$449.00 $676.49
Mastercraft Muffler Silent Master for MCX 2008 - 2012 Part# 252002 20 ° Angled 3-1/2" Offset Inlet Manufactured by Ultra Marine. Easy to install! Ultra Marine Fine...
2004-2006 Muffler Kit Mastercraft - MCX 205V/X2/210/X10/230/X30/280/X80/Xstar/X1 OEM 253010A
28%
$1,258.00 $1,750.57
MUFFLER KIT MASTERCRAFT 2004-2006 MCX 205V/X2/210/X10/230/X30/280/X80/Xstar/X1 OEM 253010A Does NOT include the rubber elbows! Inlets are tilted outwards towards the end caps Inlet holes are...
Transmission Oil Cooler 5 Inch Barrel X 1-1/4 Inch O.D. Barbs CRU-97112
8%
$157.00 $169.95
Transmission Oil Cooler - OEM Crusader / PCM 8 inch overall length 2 inch diameter bundle 1-1/4 inch water hose connections Original Crusader Replaces Marine...
Muffler Interchangeable Angled 3 Inch O.D. 60° Inlet With 3 Inch O.D. Straight Outlet 46 Inches Long Custom Built OEM UM-288-3001-46
32%
$329.00 $486.95
Ultra Marine - Muffler Aftermarket Interchangeable UM-288-3001-46 - CUSTOM SIZE 60 Degree Angled 3" Inlet With 3" Straight Outlet 46" Tip to Tip - NOTE...
Gasket - Seal Kit Transmission Hurth - ZF - 630 IV OEM 316807AB Gasket - Seal Kit Transmission Hurth - ZF - 630 IV OEM 316807AB
7%
$205.00 $220.80
Seal and gasket kit used on the Hurth 630V1 and ZF 63IV v-drive transmission models Includes pump and control valve gasket, necessary o-rings, input shaft...
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...
Muffler Interchangeable 13" Ultra Straight 3-1/2 Inch O.D. Inlet With 3-1/2 Inch O.D. Straight Outlet 13 Inches Long OEM UM-289-3120
32%
$275.00 $401.99
Ultra Marine - Muffler Aftermarket Interchangeable UM-289-3120 Ultra Straight 3-1/2" Inlet With 3-1/2" Straight Outlet 13" Tip to Tip 3-1/2" in - 3-1/2" out Some...
2009-2011 Muffler Mastercraft Late 2009 - 2011 - 3.5" Inlet/Outlet- Vertical Port 214V/MX/XS/ex.35 use W/RTP/MCX/LY6 OEM 252062
29%
$599.00 $849.33
MUFFLER MASTERCRAFT LATE 2009 - 2011 3.5" inlet/outlet Vertical Port 214V/MX/XS/ex.35 Use W/RTP/MCX/LY6 OEM 252062 MUFFLER-3.5" VERT. PORT LATE '09-'11 214V/MS/XS/ex.35 USE W/RTP/MCX/LY6 Manufactured by...
2009-2011 Muffler Mastercraft -  4" Inlet w/60° Angle - 3.5" Outlet w/ 80° Angle - Vertical 8.1 Liter 235/245/255/XS OEM 252050 2009-2011 Muffler Mastercraft -  4" Inlet w/60° Angle - 3.5" Outlet w/ 80° Angle - Vertical 8.1 Liter 235/245/255/XS OEM 252050
41%
$496.91 $848.55
MUFFLER MASTERCRAFT 2009 - 2011 4" Inlet with 60° angle 3.5" Outlet with 80° angle Vertical 8.1 Liter 235/245/255/XS OEM 252050 MUFFLER-4 > 3.5 FG...
Flapper Exhaust Protector Valve With Clamp "5 & 6" SIERRA-18-4458 - CLEARANCED Flapper Exhaust Protector Valve With Clamp "5 & 6" SIERRA-18-4458 - CLEARANCED
4%
$70.00 $72.99
Exhaust protector valve mounts on the outside of 5 in. & 6 in. exhaust tip to prevent backflow of water into the exhaust. For 5...
4 Inch. Exhaust Tips With Flapper Corsa® Performance 11050 4 Inch. Exhaust Tips With Flapper Corsa® Performance 11050
4%
$374.00 $389.99
Pair of polished stainless steel exhaust tips fit inboard boats with 4 in. exhaust. ONE PAIR 90 degree flange exhaust tips Full 6 inch diameter...
Transmission Oil Cooler 5 Inch Barrel X 1-1/4 Inch O.D. Barbs CRU-97112
11%
$141.90 $158.89
Transmission Oil Cooler - OEM Crusader / PCM OIL COOLER, 5 INCH X 1 INCH with 3/8" NPT Fitting
Oil Cooler 9 Inch Barrel X 1-1/4 Inch Barbs OEM R147005 Oil Cooler 9 Inch Barrel X 1-1/4 Inch Barbs OEM R147005
14%
$182.10 $210.98
OIL COOLER TRANSMISSION 9" Barrel x 1-1/4" Barbs This is for Indmar Ford & GM with Powerslot Will also fit Mercruiser GM - 3/8" NPT...
2013 Muffler Mastercraft - Starboard 3.5"Inlet W/68° Angle Tilted 15° - 90° Outlet  OEM 252089S
13%
$879.05 $1,008.13
MUFFLER MASTERCRAFT 2013 STARBOARD Starboard 3.5" inlet w/68° angle tilted 15° 90° outlet OEM 252089S MUFFLER - STARBOARD SIDE 2013 - 2014 IF YOU NEED...
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