421-02-6108 Big Block Stainless Steel "SA" Risers (Pictured with optional bung) Big Block std. Stainless steel "SA" riser pipes are designed for Mercruiser Silent Choice, Corsa Quick and Quiet (with modifications), and IMCO's Sound Advantage systems. 3/4"npt fitting is used on front of pipe for thermostat housing that have (4) 1" hoses water to go to exhaust manifolds if needed click on (ADD BUNG). Shift bracket, ECM, or EFI brackets available as bolt on or welded to the risers.To order see PowerFlow Accessories or Related Products. pipes can also be used with our Aluminum "S" pipes part number 02-1225 for under swim step applications. (Sold in pairs)
When using these risers it's best to order 2 each 02-2242 oval hoses for the wishbone connection.
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421-02-6109 Big Block 3" Stainless Steel "SA" Riser Pipes (Pictured with optional bung) Big Block 3" Stainless steel "SA" riser pipes are designed to replace stock Mercruiser Bravo exhaust with 3" riser block between manifold & Riser. 3/4"npt fitting is used on front of pipe for thermostat housing that have (4) 1" hoses water to go to exhaust manifolds if needed click on (ADD BUNG). Shift bracket, ECM, or EFI brackets available as bolt on or welded to the risers.To order see PowerFlow Accessories or Related Products. They can also be used with our Aluminum "S" pipes part number 02-1225 for under swim step applications. (Sold in pairs)
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421-02-6110 Big Block 6" Stainless steel "SA" riser pipes (Pictured with optional bung) Big Block 6" Stainless steel "SA" riser pipes are designed to replace stock Mercruiser Bravo exhaust with 6" riser block between manifold & Riser. 3/4"npt fitting is used on front of pipe for thermostat housing that have (4) 1" hoses water to go to exhaust manifolds if needed click on (ADD BUNG). Shift bracket, ECM, or EFI brackets available as bolt on or welded to the risers.To order see PowerFlow Accessories or Related Products. They can also be used with our Aluminum "S" pipes part number 02-1225 for under swim step applications. (Sold in pairs)
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421-301K Billet 454/502 Mercury Serpentine Pulley Kit
This kit comes with:
- 1 - Crankshaft pulley
- 1 - Circulating pump pulley
- 1 - Sea pump pulley
- 1 - Power steering pulley
- 1 - 17mm straight shaft Alternator pulley (Does not work with Mando)
- 1 - Idler pulley
All pulleys are CNC machined and are tumble polished (semi-polished, satin finish).
NOTE: This kit will not retrofit V-Belt Pulley Systems to Serpentine. It is to replace existing Serpentine setups only!
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421-226 These billet aluminum pulleys are black anodized and replace the original and now discontinued painted steel OEM versions from Mercury.
Fits:
- 496 Mag base & HO: 0W310000 & up
- 496 Mag EC Base & HO: 1A066164 thru 1A350440.
- 496 HO bravo: 1G400000 & up.
- 8.2 Mag base & HO: 1S351597 & up.
- 8.2 Mag EC base & HO: 1A350340 & up.
Kit includes:
- Crank pulley
- Circulation pump pulley
- Alternator pulley
- 17mm shaft power steering pulley & hub
Kit does not include:
- 625-4278 sea pump pulley
- 625-8178BK smooth idler pulley
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421-225 These billet aluminum pulleys are black anodized and replace the original and now discontinued painted steel OEM versions from Mercury.
Fits 496 Mag Base & HO:
- 0M025000 thru 0M687082
- 0M687082 thru 0W059999
- 0W060000 thru 0W309999
Kit includes:
- Crank pulley
- Circulation pump pulley
- Alternator pulley
- 19mm shaft power steering pulley & hub
Kit does not include:
- 625-4278 sea pump pulley
- 625-8178BK smooth idler pulley
- 625-8179BK ribbed idler pulley
- If using these idlers you will need to purchase a smaller belt.
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421-04-8005 Billet MountsBillet Mounts with 3/4-16 Stud (Sold in pairs)
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421-04-1380 Black Water Pump BracketBlack Water Pump Bracket
Fits Mercury water pumps with machined snout and Jabsco water pumps.
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421-05-2017 Bonding Wire 6"Bonding Wire 6"
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421-09-2034 Bravo 1 and Alpha 1 Drive Shower Replacement Hose Bravo 1/ Alpha 1 Drive Shower Replacement Hose
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421-09-2035 Bravo 3 Drive Shower Replacement HoseBravo 3 Drive Shower Replacement Hose
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421-03-6053 Bravo SaddleBravo Saddle (Saddle only as shown)
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421-01-8073 Bravo Drive Shower
To view and download the PDF Bravo Shower Cap Instructions CLICK HEREBravo Drive Shower
Designed for easy installation on Bravo drives. Our stainless steel caps reduce oil and bearing temperatures to promote maximum drive durability and longevity. This unique design disburses water over the top cap along with the sides of the case where the majority of heat dissipation takes place. Kits come complete with all the necessary mounting hardware and installation instructions.
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421-DS-5 Bravo Spacer Kit .500” Bravo Black Anodized 6061-T6 Aluminum
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421-DS-1 Bravo Spacer Kit 1.000” Bravo Black Anodized 6061-T6 Aluminum
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421-DS-2 Bravo Spacer Kit 2.000” Bravo Black Anodized 6061-T6 Aluminum
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421-DS-25 Bravo Spacer Kit 2.500” Bravo Black Anodized 6061-T6 Aluminum
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421-DS-3 Bravo Spacer Kit 3.000” Bravo Black Anodized 6061-T6 Aluminum
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This Part has options, please click the button below to order.
421-03-80 + Option(s) 28" - 38” Bravo Tie Bars by Imco
IMCO's stainless steel Tie Bars improve the handling characteristics and are necessary for external steering. Tie bars add stability and keeps drives in unison. Unlike other manufactures, our bars are machined with an "Eye Bolt" on one end, and a Threaded Eye Bolt and Jam Nut at the other for strength and durability. Available for Mercruiser Alpha I, Alpha II and Bravo outdrives. All tie bars are highly polished.
For proper length when ordering please measure Prop shaft to Prop shaft centerline.
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421-1399 Replacement set of O-Rings for Bravo Upper and Lower Units or for Drive Spacers.
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