Sold out -18% sale
Sierra Not Qualified for Free Shipping Sierra Electronic Distributor GM L4 153 181 Std Rotation #18-5486
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Sierra Sierra Electronic Distributor GM L4 153 181 Std Rotation #18-5486 $847.46 $1,026.22
Sierra 18-5486 DistributorsDesigned for 12 Volt Negative ground systems, the Sierra YLM Series Marine distributors replace original equipment marine distributors with modern, high performance technology. This complete, self-contained ignition system combines the triggering device and amplifier into a single unit that sits inside the distributor housing. A self-contained module/pickup assembly has no moving parts to wear out. Sierra’s time tested reliability you need in extreme marine conditions. A simple wiring hook up allows this system to fit a wide variety of marine applications. This ignition system drives both original equipment and high performance coils. Improved performance and combustion efficiency Improved spark plug life Accurate spark timing Reduced maintenance Easy installation OEM Interchange:MALLORY: YLM673AVIgnition: DistributorFIts GM L4, 153 & 181 CID (Conventional Rotation)Sierra Electronic Distributor #18-5486Normalized SKU: 185486UPC Code: 808282244408
-18% sale
Sierra Not Qualified for Free Shipping Sierra Electronic Ignition Distributor #18-5494-2
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Sierra Sierra Electronic Ignition Distributor #18-5494-2 $811.57 $982.76
Sierra 18-5494-2 DistributorsSierra Electronic Ignition Distributor #18-5494-2Normalized SKU: 1854942UPC Code: 808282349905
Sold out -18% sale
Sierra Not Qualified for Free Shipping Sierra Electronic Ignition Distributor Ford V8 351C #18-5496-2
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Sierra Sierra Electronic Ignition Distributor Ford V8 351C #18-5496-2 $898.69 $1,088.26
Sierra 18-5496-2 DistributorsSierra Electronic Ignition Distributor Ford V8 351C #18-5496-2Normalized SKU: 1854962UPC Code: 808282349929
-22% sale
Sierra Qualifies for Free Shipping Sierra Electronics Shift Assist Points & Electronic Distributor OMC #18-99515
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Sierra Sierra Electronics Shift Assist Points & Electronic Distributor OMC #18-99515 $166.15 $211.03
Sierra 18-99515 Modules High amperage ESA for Delco HEI Distributors w/ coil in cap Component of the 423-3000 Conversion Kit Can be used in place of 123-9898-P) Interchange:  CDI    123-9800OMC Stern Drive    982774OMC Stern Drive    984036OMC Stern Drive    984281OMC Stern Drive    985902OMC Stern Drive    986342OMC Stern Drive    987738OMC Stern Drive    987739OMC Stern Drive    987740 Normalized SKU: 1899515UPC Code: 808282395155
-17% sale
Sierra Not Qualified for Free Shipping Sierra Emergency Cut-Off Switch #MP40950
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Sierra Sierra Emergency Cut-Off Switch #MP40950 $56.45 $67.73
Sierra MP40950 Switches Kills ignition when lanyard is pulled For use with conventional or magneto ignitions Seals out moisture Makes re-connection easier Panel thickness up to 1/4'' 4 Terminals allow selection of normally open or normally closed circuit Replacement Lanyard: MP40990 Normalized SKU: MP40950UPC Code: 808282287672
-17% sale
Sierra Not Qualified for Free Shipping Sierra Emergency Cut-Off Switch #MP40960
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Sierra Sierra Emergency Cut-Off Switch #MP40960 $38.01 $45.36
Sierra MP40960 SwitchesIn emergency, a pull on the lanyard instantly stops the engine, preventing a runaway situation. All parts for installation are included (except where extra wire is needed) and illustrated instructions are enclosed.Sierra Emergency Cut-Off Switch #MP40960Normalized SKU: MP40960UPC Code: 808282367183
-17% sale
Sierra Not Qualified for Free Shipping Sierra Emergency Cut-Off Switch #MP40970-1
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Sierra Sierra Emergency Cut-Off Switch #MP40970-1 $29.70 $35.45
Sierra MP40970-1 Switches New boats are equipped with this important safety feature by the builder. Now owners of older boats can add this same protection easily and quickly. In an emergency a quick pull on the lanyard stops the engine, thus preventing a run-away. All parts and complete instructions are included. Coiled Lanyard Kills ignition when the lanyard is pulled For use with conventional or magneto ignitions Unique design keeps plunger down when lanyard connected Seals out moisture Makes re-connection easier Panel thickness up to 1/4'' 4 Terminals allow selection of normally open or normally closed circuit Replacement Lanyard: MP40990 Interchange: Cole-Hersee M-597 Seadog 420487-1 Valmar 31012 Normalized SKU: MP409701UPC Code: 808282200756
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra End Cap Gasket #18-2941
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Sierra Sierra End Cap Gasket #18-2941 $8.35 $9.82
Sierra 18-2941 Engine GasketsSierra End Cap Gasket #18-2941OEM Interchange:CHRYSLER INBOARD: 2469559CHRYSLER INBOARD: 2847480Gaskets: End CapSierra End Cap Gasket #18-2941Normalized SKU: 182941UPC Code: 808282258610
Sold out -17% sale
Sierra End Cap Gasket 2-pk #18-2941-9
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Sierra Sierra End Cap Gasket 2-pk #18-2941-9 $12.38 $14.78
Sierra 18-2941-9 Engine Gaskets Additional Details: For: 318 CID Engines Use With: 18-1913: Elbow 18-1941: Manifold End Plate 18-1942: Manifold End Plate w/ hole 18-1945: Riser 18-1946: Elbow 18-1940: Manifold 18-6600: Elbow End Cap Gasket (Priced Per Pkg of 2) Sierra End Cap Gasket (Priced Per Pkg of 2) #18-2941-9 Normalized SKU: 1829419UPC Code: 808282164300
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra End Cap to Manifold Gasket #18-1210
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Sierra Sierra End Cap to Manifold Gasket #18-1210 $0.34 $0.40
Sierra 18-1210 Engine GasketsSierra End Cap to Manifold Gasket #18-1210OEM Interchange:MERCURY MARINE: 27-39923Sierra End Cap to Manifold Gasket #18-1210Normalized SKU: 181210UPC Code: 030999775719
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra End Cap to Manifold Gasket #18-1210-1
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Sierra Sierra End Cap to Manifold Gasket #18-1210-1 $8.34 $9.95
Sierra 18-1210-1 Engine Gaskets Fits: MCM 120 & 160 Package of 2 Normalized SKU: 1812101UPC Code: 808282369071
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra End Cap to Manifold Gasket 2-pk #18-1210-1-9
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Sierra Sierra End Cap to Manifold Gasket 2-pk #18-1210-1-9 $15.50 $18.50
Sierra 18-1210-1-9 Engine GasketsSierra End Cap to Manifold Gasket 2-pk #18-1210-1-9Normalized SKU: 18121019UPC Code: 808282369408
Sold out -17% sale
Sierra End Cap to Manifold Gasket 2-pk #18-1210-9
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Sierra Sierra End Cap to Manifold Gasket 2-pk #18-1210-9 $14.79 $17.65
Sierra 18-1210-9 Engine GasketsEnd Cap to Manifold Gasket (Priced Per Pkg of 2)Sierra End Cap to Manifold Gasket (Priced Per Pkg of 2) #18-1210-9Normalized SKU: 1812109UPC Code: 808282162351
-17% sale
Sierra Not Qualified for Free Shipping Sierra End Plate #18-5021
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Sierra Sierra End Plate #18-5021 $15.53 $18.54
Sierra 18-5021 AccessoriesEnd PlateOEM Interchange:MERCURY MARINE: 805629Sierra End Plate #18-5021Normalized SKU: 185021UPC Code: 808282197919
NEW ARRIVAL -22% sale
Sierra Qualifies for Free Shipping Sierra Engine Adapter Harness Mercury #18-99445
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Sierra Sierra Engine Adapter Harness Mercury #18-99445 $257.00 $326.41
Sierra 18-99445 Wiring Harness The Sierra 18-99445 is an engine adapter harness designed to bridge older Mercury engines that use a side cowling connection to a newer 8-pin plug configuration. If you're repowering a boat with a newer Mercury engine or upgrading a control harness, this adapter saves you from having to rewire the entire setup. It connects the old side cowling connector on the engine side to the modern 8-pin plug on the rigging side, making the two systems talk to each other without cutting or splicing. This is a practical solution for repower projects and older Mercury engine upgrades where the original harness connector style no longer matches the new equipment. Adapts the older Mercury side cowling connection to the new 8-pin plug Designed for Mercury engine repower and harness upgrade applications No cutting or splicing required Interchange:CDI 421-4401Mercury Marine 84-93669A2 Normalized SKU: 1899445UPC Code: 736983854667
-22% sale
Sierra Not Qualified for Free Shipping Sierra Engine Alignment Tool #18-4442
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Sierra Sierra Engine Alignment Tool #18-4442 $149.56 $189.96
Sierra 18-4442 Engine ToolsEngine Alignment ToolOEM Interchange:MERCURY MARINE: 91-57797A3Sierra Engine Alignment Tool #18-4442Normalized SKU: 184442UPC Code: 030999318138
-22% sale
Sierra Not Qualified for Free Shipping Sierra Engine Coupler #18-2171
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Sierra Sierra Engine Coupler #18-2171 $260.35 $330.67
Sierra 18-2171 Engine CouplerEngine CouplerOEM Interchange:MERCURY MARINE: 76850A2Sierra Engine Coupler #18-2171Normalized SKU: 182171UPC Code: 030999311757
-20% sale
Sierra Not Qualified for Free Shipping Sierra Engine Coupler #18-2172
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Sierra Sierra Engine Coupler #18-2172 $404.65 $505.06
Sierra 18-2172 Engine CouplerEngine CouplerOEM Interchange:MERCURY MARINE: 14505A2Sierra Engine Coupler #18-2172Normalized SKU: 182172UPC Code: 030999562463
-20% sale
Sierra 18-2173 Engine Coupler
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Sierra Sierra Engine Coupler #18-2173 $339.99 $424.35
Sierra 18-2173 Engine CouplerEngine CouplerOEM Interchange:MERCURY MARINE: 59826A3Sierra Engine Coupler #18-2173Normalized SKU: 182173UPC Code: 030999562470
-22% sale
Sierra Not Qualified for Free Shipping Sierra Engine Coupler #18-21751
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Sierra Sierra Engine Coupler #18-21751 $287.80 $365.52
Sierra 18-21751 Engine Coupler Engine Coupler OEM Interchange:OMC: 3853962OMC: 983902OMC: 986338VOLVO: 3853962-3 ​Fits: OMC 2.5L (1986), 3.0L (1986-90), 4.3L/5.0L/5.7L (1986) KW & KWB Suffix only.Fits: OMC 7.4L (1990-98), 8.2L (1992-93, 1998) Normalized SKU: 1821751UPC Code: 808282186364

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