This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-56775T Drive Shaft Adaptor 91-56775T
Provides a wrench surface to turn the drive shaft on the MC-1, R-MR, Alpha One and Alpha One Gen II drive units.
Supercedes: 91-56775
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-14311A04 Drive Shaft Bearing Preload Tool 91-14311A04
Supersedes: 91-14311A1
91-44307A1
91-14311A2
Preloads the drive shaft bearing when checking pinion height and backlash on MC-1, R-MR, Alpha One and Alpha One Gen II drive units.
Note: This tools is also used on the Mercury and Mariner V-6 gear cases
Supercedes: 91-14311A1, 91-14311A2
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-43506T Drive Shaft Bearing Retainer Wrench 91-43506T
Removes and installs the threaded bearing on all Alpha drive units.
Supercedes: FT15691, FT11293, 91-43506, 91-43506
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-36569T Driver Head 91-36569T
Removes the pinion bearing from the MC-1, R-MR, Alpha One and Alpha One Gen II gear cases.
Supercedes: 91-36569
Supercedes: 91-36569
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-37323 Driver Rod 91-37323
Use with various drivers to install bearings on the Alpha One Gen II, Bravo One and Bravo Two gear cases.
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-815850 Forward Gear Assembly Tube 91-815850
Installs and removes the forward gear of the Alpha One and Alpha One Gen II counter rotating gear cases.
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-31229 Forward Gear Bearing Cup Puller Shaft 91-31229
5/8 in. x 18 in. (15.875 mm) long threaded rod.
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-30366T1 Gimbal Bearing Installation Collar Number 3 91-30366T1
Use with 91-29310 Plate Puller, 91-37323 Driver Rod and 91-32335T Bearing Head to install the gimbal bearing in Alpha, MC-1 and Bravo drive units.
Supercedes: 91-30366, 91-303661
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-90774 Guide \ Puller Tool 91-90774
Presses the bearing cone onto the Alpha One Gen II drive shaft housing pinion gear.
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-816243 Guide Plate 91-816243
Centers the rod used to drive in the front bearing on the Alpha One Gen II counter rotating gear case.
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-11-24156 Hex Nut @2 11-24156 (Priced Each. Must sell in quantities of 2)
A 5/8 in. x 18 in. hex nut which aids in the removal and installation of various engine components. May use with Puller Shaft 91-31229; also included in the Bearing Removal and Installation Kit (91-31229A7).
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-78310 Hinge Pin Tool 91-78310
Removes and installs the hinge pins from all Mercury MerCruiser drive units.
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-37299Q2 Lube Gun (Priced Each. Must be sold in quantities of 4) 91-37299Q2
Allows easy access to grease fittings.
Supersedes: 91-37299, 91-37299A1
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560-74019 McGard Stern Drive Locks - Mercruiser Alpha, Bravo, OMC Cobra & King Cobra Dual Drives Stern Drive Lock
- Overall Lock Length: .750"
- Thread Size: 7/16" - 20
- Hex Size: 5/8"
Stern Drive Applications: Mercruiser Alpha, Bravo I-III (incl. X & XR), Blackhawk, Vazer, OMC Cobra & King Cobra, Volvo SX, DP-S. Note: Only works on 2003 and earlier models of Bravo III.
Stern drive theft is on the rise, don't take a chance on losing your favorite outdrive or prop, for that matter be safe not sorry. Simply replace one of the stern drive mounting nuts with a McGard lock. Stern drive locks are fully machined from high quality stainless steel and through-hardened. This proven design features a free-spinning collar that turns if attacked by gripping tools without loosening the lock. Give yourself the best protection available against stern drive theft. Ask for McGard Marine Locks by name.
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560-74039 McGard Prop Locks - Mercruiser Alpha, Bravo, TRS Prop Lock
- Overall Lock Length: 1.025"
- Thread Size: 3/4" - 16
- Hex Size: 1 - 1/16"
- Set of 1 Lock, 1 Key, 1 Washer and 1 Cap
Stern Drive Applications: MerCruiser Alpha I, Bravo I (incl. X & XR), Vazer
OMC Cobra and King Cobra
Outboard Motor Applications: Mercury/Mariner 70 hp & larger (ex. 225hp 4 stroke before 2005)
Mercury Bigfoot 40 hp, 50 hp, 60 hp (4 stroke)
Optimax 75 hp & larger, Verado 135 hp & larger
Johnson/Evinrude 150 hp & larger (2 stroke)
Propeller theft is on the rise, don't take a chance on losing your favorite outdrive or prop, for that matter be safe not sorry. Protect yourself against expensive propeller theft with a McGard propeller lock, featuring the same patented design as our stern drive and outboard motor locks. A free-spinning collar will turn if attacked by gripping tools without loosening the lock. Constructed of naval brass and hardened stainless steel, once installed our propeller lock offers maximum security for 24 hour protection.
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-15755T Needle Bearing Driver 91-15755T
Supersedes: 91-37263
91-15755
91-31109
Installs needle bearings in MC-1, R-MR, Alpha One and Alpha One Gen II bearing carriers.
Supercedes: 91-31109, 91-37263, 91-15755, 91-15755
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-33491 Needle Bearing Driver 91-33491
Installs the needle bearing in the forward gear, removes and installs the seals and bearing in the gimbal housing of the MC-1, R-MR and Alpha One drive units.
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-33492T Needle Bearing Driver 91-33492T
Removes and installs the lower swivel pin needle bearings in the gimbal ring on the MC-1, R-MR and Alpha One drive units.
Supersedes: 91-33492
Supercedes: 91-33492
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-37324T Needle Bearing Driver, Pilot Washer 91-37324T
Used to pilot the threaded rod when installing the pinion bearing in the MC-1, R-MR and Alpha One drive units.
Supercedes: 91-37324
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This Part has options, please click the button below to order.
Special Order OEM Mercruiser Parts can take up to 7-10 business days to ship.
525-91-807944T Needle Bearing Installation Tool, Reverse Gear 91-807944T
Use to install the needle bearing in the reverse gear on the Alpha One Gen II counter rotation drive units.
Supersedes: 91-807944
Supercedes: 91-807944
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