620-300100
- Eliminate your power robbing circulating pump!
- Constructed of 316L stainless steel.
- One large 1" bypass hose for increased water volume.
- Includes 142 degree thermostat.
- Includes Crossover, Thermostat housing, 142 degree thermostat, hose with clamps, bolts & gaskets.
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625-4453
- Constructed of 316L stainless steel and billet aluminum.
- Offers a optional cooling system bypass port as well as a single inlet.
- Includes pulley for 454/502 Mag applications.
- This model ONLY fits 454/502
- Other models available for popular HP Mercury engines including the 500, 525, 600, and 700's.
- O-ring sealed, no gaskets required.
- Includes mounting bolts.
- Multiple plumbing options from three 1" NPT ports.
- Includes one 1" NPT x 1-1/4" Hose fitting and two 1" NPT pipe plugs.
- Allows for the removal of the factory power robbing circulating pump.
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625-4452
- Constructed of 316L stainless steel and billet aluminum water crossover.
- Offers a optional cooling system bypass port as well as a single inlet.
- No pulley included.
- Kits available for all popular HP Mercury engines including the 500, 525, 600, and 700's.
- O-ring sealed, no gaskets required.
- Includes mounting bolts.
- Multiple plumbing options from three 1" NPT ports.
- Includes one 1" NPT x 1-1/4" Hose fitting and two 1" NPT pipe plugs.
- Allows for the removal of the factory power robbing circulating pump.
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625-4454
- Constructed of 316L Stainless steel and billet aluminum water crossover.
- Allows for the removal of the factory power robbing circulating pump.
- Offers an optional cooling system bypass port as well as a single inlet.
- Fits HP500 only
- Includes pulley for HP500 Mercury engines. Use 625-4452 if you already have pulley
- O-ring sealed, no gaskets required.
- Includes mounting bolts.
- Multiple plumbing options from three 1" NPT ports.
- Includes one 1" NPT x 1-1/4" Hose fitting and two 1" NPT pipe plugs.
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410-1504
- Constructed of 316L Stainless Steel.
- 1" slip-on on the top of the crossover tube(can be used to bypass water to the thermostat housing).
- 1-1/4" slip-on connection inlet fitting.
- O-ring sealed, no gaskets required.
- Includes bolts.
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410-1503
- Constructed of 316L Stainless Steel.
- Fits BBC applications.
- 1" NPT inlet water crossover (allowing you to use a number of assorted fittings to adapt to your application).
- Includes bolts and gaskets.
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410-1500
- Constructed of 316L Stainless Steel.
- Inlet plates welded to a large diameter crossover tube to provide equal water distribution.
- Uses a standard 1-1/4" slip-on inlet connection.
- Starboard configuration (check before ordering).
- For Chevy Engines Only, BBC.
- Includes bolts and gaskets.
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410-1502
- Constructed of 316L Stainless Steel.
- Inlet plates
welded to a large diameter crossover tube to provide equal water
distribution.
- Uses a standard 1-1/4" slip-on inlet
connection.
- Available in port and starboard inlet configurations (check before ordering).
- For Chevy Engines Only.
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625-4372
- Low profile swivel 1-1/4"hose barb provision.
- Power steering pump mounting provision.
- CNC machined from 6061-T6 billet aluminum
- O-ringed on all sealing surfaces (eliminated the need for sealing gaskets).
- Polished to a mirror finish or can be custom color finished by the customer.
- Single center inlet 1-1/4" hose fitting.
- Dual side entry 1" NPT inlets also included.
- Inlet can be indexed or clocked to different positions.
- Fit all popular B/B GM type engines.
- Includes bolts and pipe plugs.
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625-4382
- CNC machined from 6061-T6 billet aluminum.
- Eliminates the need for any additional power steering brackets.
- These units fit all popular B/B GM type engines.
- Features power steering mounting ears to be used in conjunction with the Hardin Marine crossover mounted power steering pump.
- Inlet hose barb fittings are available separately.
- Dual 1" NPT inlets.
- Includes mounting bolts.
- O-ringed on all sealing surfaces (eliminated the need for sealing gaskets).
- Polished to a mirror finish or can be custom color finished by the customer.
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625-4370
- Standard version of our single inlet crossover.
- Feature a single 90 degree 1-1/4” hose barb.
- Inlet can be clocked or indexed to different positions.
- Accommodates various water inlet hose routing.
- These units fit all popular B/B GM type engines.
- Dual side entry 1" NPT inlets also included.
- O-ringed on all sealing surfaces (eliminated the need for sealing gaskets).
- Polished to a mirror finish or can be custom color finished by the customer.
- Includes bolts and pipe plugs.
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625-4380
- CNC machined from 6061-T6 billet aluminum
- These units fit all popular B/B GM type engines.
- Inlet hose barb fittings are available separately.
- Dual side entry 1" NPT inlets.
- O-ringed on all sealing surfaces (eliminated the need for sealing gaskets).
- Polished to a mirror finish or can be custom color finished by the customer.
- Inlet hose barb fitting sold separately.
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625-4383
- 1" NPT Dual Inlet
- For Use with 1 or 2 Stage Sea Pump
- Includes #625-4382 high flow water inlet crossover in a dual inlet configuration.
- Extreme Series Power Steering Pump.
- Steering pump uses a short V-belt that is run off of a custom designed 2-groove sea pump pulley.
- Kit includes: a power steering pump, crossover with power steering mount, a dual groove sea pump pulley, the V-belt and mounting hardware.
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625-4373
- 1-1/4" Single Inlet Crossover Power Steering System.
- For Use with 1 or 2 Stage Sea Pump
- Includes #625-4372 high flow water inlet crossover in a dual inlet configuration.
- Extreme Series Power Steering Pump.
- Steering pump uses a short V-belt that is run off of a custom designed 2-groove sea pump pulley.
- Kit includes a power steering pump, crossover with power steering mount, a dual groove sea pump pulley, the V-belt and mounting hardware.
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520-871KWO
- Designed for 8-71/14-71 Kit with Bypass.
- Custom designed crossover kit.
- Starboard inlet available by special order, call for more info.
- 1-1/4" push on hose port inlet .
- Two 1-1/4" push on hose outlet.
- 3/8" NPT sender port.
- Bolts and Gaskets included.
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520-174BMKW
- Big Block Chevy Port Inlet without Bypass.
- Experience horsepower gains of up to 15 horsepower while increasing water circulation.
- Kits come complete with all necessary bolts, gaskets, and hardware.
- Bypass systems use a thermostat while non-bypass doesn't.
- Starboard inlet available by special order.
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520-174BMKWO
- Custom designed crossover kit.
- Allows the use of a thermostat or a kit with no thermostat.
- Starboard inlet available by special order.
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520-250BMKWO
- Custom designed crossover kit.
- Allows the use of a thermostat or a kit with no thermostat.
- Thermostat Housing has port for sender if desired
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421-04-6210 B/B Crossover 1 1/4 " hose barb with bypass.1 1/4"hose barb fitting with bypass.. Polished water crossovers are designed to fit Chevy big block. Constructed from stainless steel with tight radius bends to clear our cast aluminum timing chain covers. Flanges are 1/4" to assure a good seal.
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421-04-6215 B/B Crossover 1 1/4" hose barb1 1/4" fitting without bypass.. Polished water crossovers are designed to fit Chevy big block. Constructed from stainless steel with tight radius bends to clear our cast aluminum timing chain covers. Flanges are 1/4" to assure a good seal.
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