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Mercruiser manifold 305-350 GM

GLM Marine aftermarket manifolds for use with models: 198 and 898 GM marine engines years 1977 to 1985. In V8 GM small block, fully tuned design will guide exhaust gases directly to elbow without turbulence and back pressure. In the meantime, additional 40% water cooling area will decrease the entire body temperature significantly. The tuned design will reduce turbulence and enhance flow for higher and maximum marine engine power.

Item 1A P/N 51237 OEM 77234A7 Exhaust manifold *port

Item 1B Starboard side OEM 77235A8

Item 2 P/N 31100 Gasket-Exhaust manifold (2 units) OEM 27- 33395 $11.95

Item 3 P/N 31490 OEM 27- 48043- 1 Gasket-End cap *5 units $14.95

Item 4 P/N 31520 OEM 27- 99777- 2 Gasket-Exhaust elbow *2 units $4.89

Item 5 P/N 50006 OEM 60207 Plate $19.95

Item 6 P/N 51120 OEM 76351A2 Exhaust elbow assy. 3" 90 degree angle $299.99

Customers who ordered 51237 also purchased:
51210 GM 120-140 hp manifold parts years 1982-1995	P/N 51210 Unit OEM 806867A8 GM 120 / 140 hp. 4 Cylinder 153 / 181 CID years 1982 - 1995 Contains the following item if required: P/N 51210 Exhaust manifold 806867A8 P/N 33570 Gasket 27-96429 P/N 30920 Gasket-End cap (5) 27- 807218 P/N 31520 Gasket-elbow or adaptor 27- 99777- 2 P/N 51020 End cap 805629A1 P/N 51030 End cap 73813A1 P/N 13980 Straight Fitting Water Drain Contents 22-862557 P/N 13992 Drain Plug Kit (5)22-806608A1 P/N 80140 O-Ring (5) 25-45253 P/N 22443 Screw-End Cap (8) 21-824941 P/N 32180 Gasket-Carburetor Base 27-807982 P/N 22444 Screw Edit 10-807212 P/N 22445 Screw (2) 10-66863-1 P/N 22484 Stud (2) 16-56826 P/N 21892 Plug-Exhaust Elbow 22-41622 P/N 21248 Flange Serrated Nut (5) 11-46335 P/N 22482 Stud-Carburetor (2) 16-70236 P/N 21664 Washer- Carburetor (5) 12-20084 P/N 19354 Lock Nut Carburetor (5) 11-25594 P/N 51210 Exhaust manifold OEM 806867A8 $499.99
87500 GLM aftermarket Mercruiser upper gearcase seal kit	Seal kit 87500. All kits include o-rings, oil seals and gaskets in the upper housing. Remember to use a gasket sealing compound. Replaces OEM 26-32511A1, Sierra 18-2648. M1 / R / MR / Alpha 1 (1964 - 1990) serial numbers 1684188 - OD469858 Includes: P/N 80420 O-ring P/N 25-32546 P/N 80190 O-ring P/N 25-55801 P/N 81180 O-ring P/N 25-25439 P/N 82380 O-ring 25-70937 P/N 85020/85060/85030 Oil seals OEM 26-32511/26-96503/26-823894 P/N 31150 Gasket 27-55810-1 P/N 85150 Grommet 26-36557
21905 Outdrive gimbal bearing	Heavy duty gimbal bearing for Mercruiser outdrive Compatible with Mercruiser 120/140, 470/485, 165, 888, 225/233, 898/228, 250/260, R, MR, Alpha 1/Gen II, Bravo models manufactured in the United States by GLM Marine. Larger area between seals allows for up to 30% more grease filling and low carbon steel cage allows higher temperature operation also included in the GLM bellows kit P/N 21905 Gimbal bearing OEM 30-862540A3, 30-60794A4, 3853807, 983987
23270 Driven gear outside race shim set	Mercruiser shim kit P/N 23270 Installed under driven gear for Shim kit OEM 15-36178A1 for bearings P/N 21540, 21550 and 21560 replaces OEM 15-36178A1.
90100 Mercruiser tools bearing retainer wrench	GLM aftermarket Mercruiser bearing retainer wrench for MC-1/R/MR/Alpha One/Alpha One Gen 2, Blackhawk, and Bravo. Installs and removes drive shaft bearing retainer for use with the bearing retainer nut P/N 8350 P/N 90100 GLM Marine aftermarket Mercruiser drive shaft bearing retainer wrench 91-17256 $88.99
88010 Mercruiser outdrive water pump and seal kit	Lower unit water pump P/N 88010 and upper - lower gearcase seal kits $119.99 Compatible with models 1 and R (1970 - 1983) Serial numbers 2663442 - 6225576 Includes: P/N 87500 / 26-32511A1 Upper housing seal set P/N 87510 / 26-33144A2 Lower seal set P/N 89840 / 47-89984T4 Impeller P/N 11070 / 28-56654 Key P/N 12410 / 46-96148T1 Housing P/N 12322 / 46-44292A3 Base P/N 12820 / 23-29804T Guide tube P/N 12810 / 48752 Cup P/N 12510 / 32435 Wear plate P/N 31010 / 27-85608-1 Gasket
	GLM Marine Products aftermarket gears for upper gearcase and lower units all models Outdrive forward, pinion and reverse gears for all models including MC-1 / R / MR and Alpha One and Generation 2 compatible with 120/140 4 cylinder, inline 6 cylinder, V6 and 5.0-5.7 liter V8 motors. Upper and lower unit gear sets with bearings and shims, ratios, years and serial numbers. See our application chart for lower and upper units for help with choosing the right one for your model Limited selection of used gears also available.
90190 Mercruiser tool bearing carrier retainer wrench	P/N 90190 Bearing carrier retainer wrench OEM 91-61069T $112.99 Bearing carrier wrench, bearing puller and pinion nut adapter Shift shaft bushing, outdrive bearing race and seal drivers. Mercury outboard and Mercruiser stern drive prop wrench kit Tools are compatible with Alpha 1 and generation 2, Bravo, MR, and Mercruiser outdrives
21950 bellows kit 30-803097T1	Bellows kit P/N 21950 includes all rubber tubes in bell housing. If you're u-joints are rusted, this indicates water has entered the bellows through a tear or hole and the hose will need to be replaced. Most customers replace all parts included in the kit at the same time. Replaces OEM 30-803097T1 or Sierra P/N 18-2601.

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