For a complete listing of all Upper Gears and Upper Gear Kits, click HERE.
For a complete listing of all Lower Gears and Lower Gear Kits, click HERE.
| Insist on ONLY Original Factory Parts |
| Alpha One Upper Gears Model Alpha One (1983-1990) Serial Numbers 6216687-0D469858 These sets are "gears only". They only include the lower bearing. |
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| Part Number | Description | Teeth | Price | Click to Buy |
| 43-55778A3 | Gear Kit 1.98:1 Ratio | 20-24 | $ 415.00 | |
| 43-45814A5 | Gear Kit 1.65:1 Ratio | 24-24 | $ 402.00 | |
| 43-75325A3 | Gear Kit 1.84:1 Ratio | 17-19 | $ 435.00 | |
| 43-18411A2 | Gear Kit 1.50:1 Ratio | 20-22 | $ 545.00 | |
| 43-66773A3 (changes to 8M0080756) | Gear Kit 1.32:1 Ratio | 16-20 | $ 695.00 | |
| 43-18411A4 | Gear Kit Comp with bearings and shims replaces 1.50:1 Heavy Duty Kit |
20-22 | $ 804.00 | |
The Kits below are COMPLETE Upper Gear Kits.
They include all upper bearings, shims, seals, orings
pinion nut and gaskets.
| Part Number Description Ratio Year Cost | Click to Buy Now |
| 43-803115T1 16-20 teeth 1.32 Ratio (1983-1990) $851.00 | |
| 43-803116T 1 20-22 teeth 1.50 Ratio (1983-1990) $755.00 | |
| 43-803112T1 24-24 teeth 1.65 Ratio (1983-1990) $750.00 | |
| 43-803114T1 17-19 teeth 1.84 Ratio (1983-1990) $640.00 | |
| 43-803101T1 20-24 teeth 1.98 Ratio (1983-1990) $748.00 | |
Lower Gear Housing Gear Kits and Sets
| Insist on ONLY Original Factory Parts |
They often only include the pinion and forward gears.
Gear Kits include seals, gaskets, shims, bearings, pinion nut and
possibly other items such as a clutch, spool, tab washer.
They usually include all three lower gears.
For a complete listing of all Lower Gears and Lower Gear Kits, click HERE.
| 43-803079T1 Gear Kit Fits R drive $1009.00 Click here to view part on Mercury Marine's website The R drive has a pre-load pin on the driveshaft |
Discontinued. Email for other options |
| 43-803091T1 Gear Kit Fits Std Rot (RH) MR & Alpha One $947.00 Click here to view part on Mercury Marine's website The MR & Alpha One drives have no pre-load pin on the driveshaft |
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| 43-803093T1 Gear Kit Fits Counter Rot (LH) MR & Alpha One $996.00 Click here to view part on Mercury Marine's website |
Discontinued. Email for other options. |
| 43-803069T1 Gear Kit Fits Std Rot (RH) $1220.00 Alpha Gen II (except 2.40 ratio) (s/n 0D469859-0F679999) Click here to view part on Mercury Marine's website |
Discontinued. Email for other options. |
| 43-803070T1 Gear Kit Fits Std. Rot. (RH) $1374.00 NO LONGER MANUFACTURED Alpha Gen II (2.40 ratio) (s/n 0D469859-0F6799999) Click here to view part on Mercury Marine's website |
Discontinued. Email for other options. |
| 43-803076T1 Gear Kit Fits Counter Rot. (LH) $1045.00 Alpha Generation II (C/R)(s/n 0D469859-0F679999) Click here to view part on Mercury Marine's website |
Discontinued. Email for other options. |
| 43-803071T1 Gear Kit Fits Std Rot (RH) $852.00 Alpha Generation II (except 2.40 ratio) (s/n 0F680000-0K999999) Click here to view part on Mercury Marine's website |
Discontinued. Email for other options. |
| 43-803072T1 Gear Kit Fits Std Rot (RH) $1422.00 NO LONGER MANUFACTURED Alpha Generation II (2.40 ratio) (s/n 0F680000-0K999999) Click here to view part on Mercury Marine's website |
Discontinued. Email for other options. |
| 43-803077T1 Gear Kit Fits Counter Rotatio (LH) $1158.00 NO LONGER MANUFACTURED Alpha Generation II (C/R)(except 2.00 ratio) (s/n 0F680000 and above) Click here to view part on Mercury Marine's website |
Discontinued. Email for other options. |
| 43-803073T1 Gear Kit Fits Std Rot (RH) $938.00 Alpha Generation II (ecept 2.0 & 2.4 ratio) (s/n 0L100010 and up) Click here to view part on Mercury Marine's website |
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| 43-803074T1 Gear Kit Fits Std Rot (RH) $910.00 Alpha Generation II (2.0 & 2.4 ratio) (s/n 0L100010 and up) Click here to view part on Mercury Marine's website |
| 43-96084A4 Gear Set (includes pinion bearing & reverse gear) $765.90 Fits MC-I, R Drive (17-28 teeth)(pre-load pin on driveshaft) Click here to view part on Mercury Marine's website |
Discontinued. Email for other options. |
| 43-96084A7 Gear Set (Includes pinion and fwd gear only) $270.00 Fits MC-I, R Drive (17-28 teeth)(pre-load pin on driveshaft) If you also need a reverse gear, order kit 43-96084A4 above Click here to view part on Mercury Marine's website |
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| 43-878087A4 Gear Set Fits MR/ Alpha One & Gen II $774.00 13-21 Teeth (no pre-load pin on driveshaft) Includes all three gears, bearings and shims Click here to view part on Mercury Marine's website |
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| 43-878087A2 Gear Set 13-21 Teeth Std Rotation $516.00 Fits Alpha Gen II (exce Click here to view part on Mercury Marine's website |
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| 43-878617A2 Gear Set 14-28 Teeth Std Rotation $622.00 Fits Alpha Gen II (2.00 & 2.40 ratio) (s/n 0F80000 and above) Click here to view part on Mercury Marine's website |
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| 43-13730A1 Gear Set 14-28 Teeth Std Rotation $1398.00 Fits Alpha Gen II (2.40 ratio) (s/n 0D469859-0K999999) Click here to view part on Mercury Marine's website |
Discontinued. Email for other options. |
| 43-13730A2 High Altitude Gear Kit $1430.00 Converts lower gearcase with 13/24 gears (1.62:1 ratio) to 14/28 gears (2.0:1 ratio) This allows for a higher overall drive ratio. Fits Alpha Gen II (s/n 0F680000 and above) with 13/24 gears Click here to view part on Mercury Marine's website |
Discontinued. Email for other options. |
| 43-828071A1 Gear Kit 13-21 Teeth Counter Rotation (LH) $878.00 Fits MR, Alpha One & Gen II (C/R) (s/n 0F679999 and below) Click here to view part on Mercury Marine's website |
Discontinued. Email for other options. |
| 43-828289A1 Gear Set 13-21 Teeth Counter Rotation (LH) $580.00 Fits Alpha Gen II (C/R)(except 2.00 ratio) (s/n 0F680000 and above) Click here to view part on Mercury Marine's website |
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| 43-855651A1 Gear Kit 14-28 Teeth Counter Rotation (LH) $423.00 Fits Alpha Gen II (2.00 ratio) (s/n 0L100040 and above) Click here to view part on Mercury Marine's website |
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| 43-92320T Reverse Gear 28 Teeth Fits R drive $278.00 Click here to view part on Mercury Marine's website |
Discontinued. Email for other options. |
| 43-828073A1 Reverse Gear 21 Teeth Fits Alpha Gen II $162.00 Click here to view part on Mercury Marine's website |
|
| 43-824109A1 MR and Alpha One Reverse Gear $589.00 Click here to view part on Mercury Marine's website |
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| Upper Gear Sets for Bravo Drives (Earlier Models) |
These Bravo Upper Gear Sets include all three upper gears, all bearings, all seals,
all o-rings, keepers, clutch, shift cam assembly, shift shaft, upper spiral shaft,
set screws, pinion nut,check ball and spring, thrust washers and shims.
For a complete listing of all Upper Gears and Upper Gear Kits, click HERE.
For a complete listing of all Lower Gears and Lower Gear Kits, click HERE.
43-803108T 1 27-29 teeth Fits Bravo One 1.36, Bravo II and III 1.81 (s/n 0B664190-0F345867)(1988-1995) $1176.10
43-803107T 1 27-23 teeth Fits Bravo One 1.50, Bravo II 2.00 and Bravo III 1.50, 1.65 and 2.00 (s/n 0B664190-0F345867)(1988-1995) $1176.05
43-803109T 1 23-30 teeth Fits Bravo One 1.65, Bravo II and Bravo III 2.20 (s/n 0B664190-0F345867)(1988-1995) $1176.10
| Upper Gear Sets for Bravo Drives (Newer Models) |
These Bravo Upper Gear Sets include all three upper gears, all bearings, all seals,
all o-rings, keepers, set screws, pinion nut, check ball and spring, thrust washers and shims.
Note: These kits do NOT include clutch, shaft or shift yoke.
For a complete listing of all Upper Gears and Upper Gear Kits, click HERE.
For a complete listing of all Lower Gears and Lower Gear Kits, click HERE.
43-803111T 1 27-29 teeth $1078.80Fits Bravo One 1.36 Ratio (s/n 0F345868-0K103438)(1995-1997)
Fits Bravo Two 1.50 and Bravo Three 1.36 (s/n 0F345868-0K262209)(1995-1997)
Fits Bravo Two and Bravo Three 1.81 (s/n 0F345868-0L999999)(1995-1999)
43-803110T 1 27-32 teeth $1078.80Fits Bravo One 1.50, Bravo Two and Bravo Three 1.65 and 2.00 (s/n 0F345868-0L999999)(1995-1999)
43-803113T 1 23-30 teeth $1078.80Fits Bravo One 1.65, Bravo Two 2.20 and Bravo Three 2.20 and 2.43 (s/n 0F345868-0L999999)(1995-1999)