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Mercruiser bellows kit *Bell housing *Transom service

Transom bell housing parts for 1973-1990 Models
with video

  • Mercruiser Alpha R MR Outdrive kits includes u-joint, shift cable and exhaust bellows with hose clamps, 2 water hoses (3/4 inch and 5/8 inch ID), gimbal bearing with oil seal and mounting gasket with drive shaft o-rings
  • 120/140 models serial numbers 37870850 - 6225576
  • 470/485 s/n 4208730 - 6225575
  • 160/165 s/n 2065190 & up
  • 888 s/n 3106717 & up
  • V8 models s/n 3856268 & up

21950 Mercruiser Kit 30-803097T1

21950 Mercruiser Kit 30-803097T1

P/N 21950 Bell housing rebuild parts. Replaces OEM 30-803097T1 or Sierra P/N 18-2061. $145.95 This includes the u-joint P/N 89050 (OEM 60932A4) with a ridge on the inside lip. This part is used for models from 1973 and up only. If you have a 1972 or older model without the ridge on the inside of the tube, you will need P/N 89040 (OEM 36223A2). This item is sold separately below or can be switched by contacting us by phone before ordering.

P/N 21950-89040 Same kit as above, but contains P/N 89040 for the 1967 - 1972 stern drive models. $169.95

21950-90200 Transom Repair Package

21950-90200 Transom Repair Package

P/N 21950-90200 *Most Popular*

Complete transom repair package for 1973 - 1990 models. Includes adhesive glue, and the hinge pin tool required to remove and install the pins on the side of the bell housing. $179.95

Part P/N 21950 replacement takes approximately 3 - 6 hours depending on skill level.
Please watch our repair video with step by step instructions
on performing this repair job.

21951 Exhaust Tube 30-803098T1

21951 Exhaust Tube 30-803098T1

P/N 21951 (same as above, but contains exhaust tube instead of accordion style hose). Replaces 30-803098T1 or Sierra 18-8206. $159.95

21960 Transom Parts Alpha 1 Gen 2

21960 Transom Parts Alpha 1 Gen 2

21960

21960

P/N 21960K *most popular Same kit as above, also includes bellows adhesive glue and hinge pin removal/installation. For Generation 2 models only, years 1991 and up, for serial numbers 0D469859 - up $204.99

90200 Mercruiser hinge pin tool

90200 Mercruiser hinge pin tool

P/N 90200 Hinge pin tool $17.95
This tool is recommended for removing the hinge pins in the bell / gimbal housing. Attempting to remove the hinge pins with a large hex key (Allen key) is not recommended as it could result stripping the pins making removal extremely difficult and time consuming. Replaces OEM 91-78310 or Sierra 18-9861.

39590 outdrive gasket 27-64818T4

39590 outdrive gasket 27-64818T4

P/N 39590 Bell housing gasket set. Replaces 27-64818T or 18-2614.
$0.00 (free with purchase of P/N 21950 or 21951)
MC-1 models up to the year 1982 (non-Alpha 1 models) use this gasket which has 1 less hole. Make sure to add this part to your cart if your sterndrive is older than 1983.

P/N 39590 OEM 27-64818T (1983 & older)
$6.15 (if purchased without 21950 or 21951)

18-9031 Sierra bellows adhesive

18-9031 Sierra bellows adhesive

P/N 18-9031 cement $19.15

90360 Bellows Expander Tool 91-45497A1

90360 Bellows Expander Tool 91-45497A1

P/N 90360 Expander tool $62.95 Installs u-joint bellow on all models

89040

89040

P/N 89040 OEM 36223A2 Drive shaft/U-joint bellows with hose clamp $48.95 This is used on models older than 1973. There is no ridge on the inside of the hose lip. If you would like to change the part from kit 21950 or 21951 to include this item instead, please contact us before ordering.

Customers who purchased bellows kits also looked at:

Prop Shaft Bearing Part 31-30956

Prop Shaft Bearing Part 31-30956

Propeller shaft carrier bearing 11410 may be replaced when re-installing the carrier if the old part was damaged during removal. Replaces OEM 31-30956T, Sierra 18-1158.

87510 Seal Kit 26-33144A2

87510 Seal Kit 26-33144A2

Lower unit seal kit 87510 is required when re-assembling the parts in the bottom end. Replaces OEM 26-33144A2, Sierra 18-2652.

M 12120 Impeller kit 1984-1990 46-44292A5

12120 Impeller kit

P/N 12120 Alpha One Gen 1 impeller water pump kit, for 1984-1990 models, serial numbers 6854393-OD469858. Replaces OEM and Sierra 18-3320. $35.99

12110 years 1970-1990 46-57234A3

12110 years 1970-1990 46-57234A3

P/N 12110 Mercruiser R MR stern drive water pump kit, for 1970-1983, serial numbers 2663442-6225576. Replaces Mercury and Sierra 18-3317. $39.99

21450 Shift cable 865436A03

21450 Shift cable 865436A03

P/N 21450 Complete outdrive lower unit shift cable kit. Includes cable, shift bellow, outdrive installation gasket kit and other parts. Replaces Mercury 865436A03 and Sierra 18-2603. $89.99

11210 1.50 ratio V8

11210 1.50 ratio V8

P/N 11210 Outdrive upper housing gears and gear sets. Includes pinion bearing P/N 21560. For 1970-1997 models, serial numbers 3106717-0K999999. Replaces Mercury 43-18410A4 and Sierra 18-2201. $444.99

11500 GM 350-305 5.7L Mercury 76850A2

11500 GM 350-305 5.7L Mercury 76850A2

P/N 11500 Outdrive engine coupler for GM Chevy 4 cylinder, V6 and V8 1985 and older with a 2 piece rear main seal, will NOT work with 1 piece rear main seal type. Circular mount only will not work with triangular mount. Replaces Mercury 76850A2 and Sierra 18-2171. $187.99

Compatible with models with a 1 piece rear main seal:
110 serial number 1537370-204403
120 2.5L s/n 6229718 - Up
140 3.0L s/n 6229718 - up
160 s/n 2048022-2770031
165, 6 cylinder s/n 2770032 - up
185 s/n 6330183 - up
190 s/n 1564539 - up
898 s/n 4762210
205 (262 CID) s/n A331455-B527954
225 s/n 539620-2694014
228 s/n 4765100-6218461
230 (5.0L) 6218462-B525981
250 s/n 4768000-4908849
260 s/n 4908850-6218461
260 (5.7L) s/n 6218462-B525981

Contact us by email for any additional information or technical help omc@sterndrive.info