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!

Oil Cooler Transmission Seakamp 12 Inch X 1-1/4 Inch Oil Cooler Seakamp SK-212134
4%
$179.00 $186.32
OIL COOLER TRANSMISSION SEAKAMP 212134 2 in. diameter standard oil cooler accepts 1 1/4 in. water hoses and 3/8 in. NPTF oil connections. Seakamp universal...
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...
Dipstick Screw In Hurth 450 - 650 - ZF45 And 63 OEM 90-3064
19%
$83.72 $103.95
This dipstick fits Hurth 450 and 630, ZF 45 and 63 Transmissions with screw-in dipsticks For Hurth 630v and ZF 63 IV transmission 45C, 63C...
OIL COOLER TRANSMISSION SEAKAMP 5 INCH X 1-1/4 INCH OIL COOLER
4%
$145.00 $151.00
OIL COOLER TRANSMISSION SEAKAMP 5 INCH X 1-1/4 INCH OIL COOLER Seakamp universal cooler fits many engine oil or transmission fluid cooling applications 5 in....
OIL PUMP FOR BORG WARNER TRANSMISSIONS 71C - 72C BORG WATER BRAND # VD-3000508001 Oil Pump For Borg Warner Transmissions 71C - 72C Borg Warner Brand VD-3000508001
23%
$680.00 $886.22
OIL PUMP FOR BORG WARNER TRANSMISSIONS 71C - 72C VD-3000508001 OEM Velvet Drive Part NEW Style - Better protection against blowing the seal. Velvet Drive...
Muffler Supra Moomba Skiers Choice 0437 - 3.5" In/Out Inline Approx 15" Overall Length OEM 101422
12%
$384.00 $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 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
25%
$348.00 $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...
2014 Muffler Mastercraft - 5.7 Standard X2 Starboard Side 250044BS
17%
$481.72 $581.76
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%
$481.72 $581.76
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...
2011-2012 Muffler Mastercraft - 3.5" Inlet/Outlet Port 6.0/6.2 Liter OEM 252082
33%
$595.00 $882.14
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
20%
$425.05 $529.27
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...
Oil Cooler Transmission Standard Indmar 9 Inch Cooler Standard O-Ring Thread OEM 86-5004 Oil Cooler Transmission Standard Indmar 9 Inch Cooler Standard O-Ring Thread OEM 86-5004
9%
$219.05 $239.88
OIL COOLER TRANSMISSION 9" STANDARD O-RING THREAD INDMAR OEM 86-5004 Indmar 9 inch transmission oil cooler Overall length is 9 inches and hose connections are...
71C Late Model Oil Baffle Velvet Drive 1017036002
11%
$79.05 $88.52
Transmission Oil Baffle 71C Late Model Oil Baffle Velvet Drive 1017036002  
Dust-Starter Cover for Bell Housing BOTTOM Mount Starter Indmar OEM MC-24-0001
14%
$12.00 $14.00
Starter Dust Cover Plate For Indmar Bell Housing with a BOTTOM MOUNT Starter Dust-Starter Cover for the bottom mount starter mounting slot on bell housing when using bottom...
Splash Plate Top Mount For Bell Housing For TOP Mounted Starter Indmar OEM 53-5047
15%
$37.00 $43.68
Splash Plate For Indmar Bell Housing with TOP MOUNT Starter OEM Indmar for TOP MOUNT starter Used with Indmar Bell Housing 53-1410 & 53-1410P - CLICK...
Bolt For Bell Housing Dust Cover Indmar OEM 565300Q Bolt For Bell Housing Dust Cover Indmar OEM 565300Q
44%
$1.64 $2.95
Screw For Indmar Bell Housing Starter-Dust Cover  Indmar 565300Q Bolt size is 7/16-14 X 1 HHCS Original Indmar SP 25 Flare Head Screw SOLD EACH...
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...
Seal Rear Flange PCM 40A - 40A 1.23:1 Transmissions OEM R047191 Seal Rear Flange PCM 40A - 40A 1.23:1 Transmissions OEM R047191
3%
$23.75 $24.40
PCM Rear Flange Seal PCM 40 I and 40 A transmissions. You should not have to drain the case because of the case design due...
Damper Plate For Velvet Drive Alto DA-107 Damper Plate For Velvet Drive Alto DA-107
3%
$359.00 $370.24
Alto Flywheel mounted transmission drive plate typically used on GM and Chrysler big block marine engines with Velvet Drive 72 series or Paragon transmissions. We...
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