R & D Marine 910-057 Propeller AccessoriesFlexible Shaft Coupling for 5" B/W, Hurth, & Volvo - 25HP/100RPM CapacityThe R & D Marine Flexible Coupling consists of a flexible disc molded with a polyester elastomer. The disc gives clearance for bolt heads and is able to flex freely to take up any temporary misalignment of the engine and shaft due to flexing of the boat structure or the engine moving on its mount. Forward thrust is taken in compression on the disc between the two half couplings, and reverse thrust is retaken in compression on the disc between the two fail-safe straps. In the unlikely event of a severe impact, the steel straps make the coupling fail-safe and ensure the drive is maintained both forward and reverse.Reduce Engine Noise & Transmission VibrationStaggered bolts enable the element to isolate vibrations and compensate for some misalignment.Reduces Costly Transmission RepairsAbsorbs shock loads due to hard gear changes.Fits Most Major TransmissionsFor engines, 5 to 1,500 horsepower It fits brands such as Borg Warner, ZF-Hurth, Twin Disc, Volvo, Yanmar, Technodrive, and more.Under Compression Load In Both Forward & ReverseThe aft steel strap bolted to the transmission acts as a backing plate to prevent reverse thrust from pulling the element apart.Quick & Easy InstallationThe R & D Marine Flexible Coupling requires no machining and comes supplied with bolts to connect between the two existing shaft flanges.Extremely DurableImpervious to saltwater, diesel, and lubrication oils. The Flexible Couplings are made from a polyester elastomer not affected by saltwater, diesel, or lubrication fluids.Fail-Safe DesignA fail-safe design is incorporated in the R & D Flexible Shaft Coupling that prevents the two couplings from pulling apart in the event of an impact or element failure, whereas other couplings do not. This fail-safe design is accomplished by using two steel straps and thru-bolts going into both the shaft coupling and transmission output flange. The aft steel strap is bolted to the transmission output flange, and the front strap is bolted to the shaft coupling. In the event of an impact, the aft steel strap (bolted to the transmission) will catch the front steel strap (bolted to the shaft coupling) and prevent the drivetrain from pulling apart.The R & D element will absorb the shock load (reducing or eliminating damage to the transmission) and will maintain contact between the two couplings. The steel straps also keep the R & D Flex-Coupling under a compression load in both forward and reverse operation (the aft strap bolted to the transmission acts as a backing plate).Machined Not MoldedThe Drivesaver is molded, while the R & D Flexible Shaft Coupling is machined. Both designs suggested that you first set your alignment by drawing the two couplings up to each other and then adding the flex-coupling. The machined part will have MUCH tighter tolerance than a molded part.Checking AlignmentThe R & D Flexible Shaft Coupling allows for alignment inspection after the element is bolted in place. There is one bolt head that is machined and painted red. After the R & D Flexible Shaft Coupling is bolted into place, a feeler gauge can be slipped between the red bolt head and the coupling. This process is repeated with the same bolt four times at 90-degree intervals by rotating the shaft. If the gap is within .010" (0.25mm), the engine is accurately aligned.To calculate the power of the coupling required:Horse Power of Engine x Reduction Ratio x 100 = HP/100RPM      Engine Speed  Example: Ford 150 HP at 2500 RPM with Borg Warner Velvet Drive 72C 2:1 Reduction Ratio Engine Horse Power is 150 HP, Max Rated RPM is 2500, Reduction Ratio is 2:1 150/2500 x 2 x 100 = 12 HP per 100RPM The coupling required is 910-009 Specifications: Manufacturer: B/W, Hurth, Volvo Diameter (inches/mm): 5 / 127 # of Bolts: 4 Diameter of Holes (inches/mm): 0.44 / 11.2 Bolt Pitch Circle (inches/mm): 4.25 / 107.9 Register (inches/mm): 2.5 / 63.5 Diameter (inches/mm): 5.63 / 143 Length (inches/mm): 2.06 / 52.4 Bolt Diameter: 7/16 UNF HP per 100 RPM (hp / kW): 25 / 18.64 Normalized SKU: 910057

Volvo Penta 22477740 Propeller AccessoriesThis stainless-steel Duoprop nut design is unique for the Volvo Penta Forward Drive. These nuts are extremely sturdy, and their corrosion-resistant stainless steel provides exceptional quality and aids in propeller acceleration and top speed. The one-of-a-kind naval brass bushing reduces vibrations while also preventing corrosion. What is the importance of this propeller nut, and why is it there? Its purpose is to keep the propeller snugly seated against the shaft taper. In a typical operation, prop nuts aren't subjected to much strain since engine power maintains the propeller pushed on the shaft. Key Features: explicitly designed for the Volvo Penta Forward Drive. Strong and durable stainless steel for superior acceleration and top speed. Patented bushing lowers drivetrain vibration and stress. Galvanic isolation protects the drive from propeller-induced corrosion Type K � Stainless-steel Duoprop Propeller Nut Product Specifications: Brand: Volvo Penta Manufacturer Part Number: 22477740 Weight: 4.50 lbs or approximately 2.04 kg Volvo Penta Exploded view / schematic Duoprop Propeller, Stainless Steel, K SeriesNormalized SKU: 22477740

McGard 74056 Propeller AccessoriesThe best protection available against costly propeller theft. Once installed the McGard propeller lock offers 24 hour protection during use, storage and transit. A free-spinning collar will turn if attacked by gripping tools without loosening the lock. Constructed of naval brass and hardened stainless steel for maximum security. Fits the following outboard motors: Honda 40-50 HP, Nissan 40 HP and larger, Tohatsu 40 HP and larger. This product may contain globally sourced materials/components. The best protection available against costly propeller theft Thread Size: M16 x 1.5 Hex Size: 1-1/16 Overall Length: 1.025 Fits the following outboard motors: Honda 40-50 HP, Nissan 40 HP and larger, Tohatsu 40 HP and larger McGard Propeller Lock, Nissan/Tohatsu M16 x 1.5 74056Normalized SKU: 74056UPC Code: 083509740561

McGard 74026 Propeller AccessoriesThe best protection available against expensive stern drive theft. Simply replace one of the stern drive mounting nuts with a McGard lock. These stern drive locks are fully machined from high quality stainless steel and are through-hardened. This proven design features a free-spinning collar that turns if attacked by gripping tools without loosening the lock. Fits the following twin drives: MerCruiser III SSM, IV SSM, V SSM, VI SSM, NXT. This product may contain globally sourced materials/components. The best protection available against costly outboard motor theft Thread Size: 5/8-18 Hex Size: 3/4 Overall Length: 0.775 Fits the following twin drives: MerCruiser III SSM, IV SSM, V SSM, VI SSM, NXT Normalized SKU: 74026UPC Code: 206568035304

McGard 74025 Propeller AccessoriesThe best protection available against expensive stern drive theft. Simply replace one of the stern drive mounting nuts with a McGard lock. These stern drive locks are fully machined from high quality stainless steel and are through-hardened. This proven design features a free-spinning collar that turns if attacked by gripping tools without loosening the lock. Fits the following single drives: Yamaha. This product may contain globally sourced materials/components. The best protection available against costly outboard motor theft Thread Size: M12 x 1.25 Hex Size: 5/8 Overall Length: 0.750 Fits the following single drives: Yamaha Normalized SKU: 74025UPC Code: 206568035502

McGard 74023 Propeller AccessoriesThe best protection available against expensive stern drive theft. Simply replace one of the stern drive mounting nuts with a McGard lock. These stern drive locks are fully machined from high quality stainless steel and are through-hardened. This proven design features a free-spinning collar that turns if attacked by gripping tools without loosening the lock. Fits the following single drives: MerCruiser TRS and II SSM. This product may contain globally sourced materials/components. The best protection available against costly outboard motor theft Thread Size: 1/2-20 Hex Size: 5/8 Overall Length: 0.750 Fits the following single drives: MerCruiser TRS and II SSM Normalized SKU: 74023UPC Code: 206568035403

McGard 74022 Propeller AccessoriesThe best protection available against expensive stern drive theft. Simply replace one of the stern drive mounting nuts with a McGard lock. These stern drive locks are fully machined from high quality stainless steel and are through-hardened. This proven design features a free-spinning collar that turns if attacked by gripping tools without loosening the lock. Fits the following single drives: MerCruiser TRS and II SSM. This product may contain globally sourced materials/components. The best protection available against costly outboard motor theft Thread Size: 1/2-20 Hex Size: 5/8 Overall Length: 0.750 Fits the following single drives: MerCruiser TRS and II SSM Normalized SKU: 74022UPC Code: 206568035601

Michigan Wheel 991241 Propeller AccessoriesReplacment urethane thrust washer for XHS hub kits.Propeller: Thrust WasherMichigan Wheel Thrust Washer 991241Normalized SKU: 991241UPC Code: 014984013215

Michigan Wheel 991239 Propeller AccessoriesReplacment urethane thrust washer for XHS hub kits.Propeller: Thrust WasherMichigan Wheel Thrust Washer 991239Normalized SKU: 991239UPC Code: 014984013192

Michigan Wheel 991235 Propeller AccessoriesReplacment urethane thrust washer for XHS hub kits.Propeller: Thrust WasherMichigan Wheel Thrust Washer 991235Normalized SKU: 991235UPC Code: 014984013154

Michigan Wheel 991234 Propeller AccessoriesReplacment urethane thrust washer for XHS hub kits.Propeller: Thrust WasherMichigan Wheel Thrust Washer 991234Normalized SKU: 991234UPC Code: 014984013147

Michigan Wheel 991233 Propeller AccessoriesReplacment urethane thrust washer for XHS hub kits.Propeller: Thrust WasherMichigan Wheel Thrust Washer 991233Normalized SKU: 991233UPC Code: 014984013130

Michigan Wheel 9660-1 Propeller AccessoriesProp attaching hardware kit 4 cylinder gear-case. Forward thrust washer, Locking tab washer and Shaft prop nut. OEM: 13191A1, 14-816629 and 11-827614.Propeller: HardwareMichigan Wheel Mercury 4 Cyl. Attaching Hardware 9660-1Normalized SKU: 96601UPC Code: 014984008969

Michigan Wheel 991229 Propeller AccessoriesReplacment drive adapter for XHS hub kits.Propeller: Drive AdapterMichigan Wheel Drive Adapter 991229Normalized SKU: 991229UPC Code: 014984013093

PolaStorm 80801 Propeller AccessoriesPolaStorm Plastic Drive Sleeve #80801Normalized SKU: 80801

BRP 318966 Propeller AccessoriesThis product replaces:GLM22241, BRP318966, 745419007089, 318966, 92-22241Normalized SKU: 318966UPC Code: 745419007089