421-TB-48 Clevis Bushing A .215” Thick, B 2.450” OD, C .850” Long, D 1.25” ID, E 1.875” OD
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421-MP-12 Clevis Pin A .750” OD, B 1/2”- 20 Thread, C 2.000” Shoulder, D 2.870” OAL, 304 SS
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421-MP-9 Clevis Pin A .750” OD, B 1/2”- 20 Thread, C 2.050” Shoulder, D 3.200” OAL, 304 SS
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421-MP-8 Clevis Pin A .750” OD, B 1/2”- 20 Thread, C 4.040” Shoulder, D 5.190” OAL, 304 SS
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421-MP-6 Clevis Pin A .875” OD, B 5/8”-18 Thread, C 2.600” Shoulder, D 4.360” OAL, 304 SS
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421-MP-13 Clevis Stud Assembly .750” Bushing & Stud Dia x 4.000” OAL Polished 304 SS
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421-TB-17 Clevis Stud Assembly 1.00” Bushing & Stud Dia x 5.375” OAL Polished 304 SS
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421-TB-20 Clevis Stud Assembly 1.00” Bushing & Stud Dia x 8.125” OAL Polished 304 SS
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421-TB-43 Clevis Stud Assembly 1.25” Bushing & Stud Dia x 6.625” OAL Polished 304 SS
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421-32 Elect Power Steer Pump 12 VDC 1.8 GPM “For use w/max 75 CC Helm Control” ((((800 Max PSI))))
PUMP SPECIFICATIONS 1. VOLTS DC: 12, CONTINUOUS RUNNING "THIS MEANS NO STEERING HESITATION" 2. AMPS: NO STEERING 12, STEERING 22- 40, FULL LOCK 66 3. GPM: 1.8 4. DIMENTIONS: 11.500" TALL 6.000" WIDE 9.250" LONG 5. WEIGHT: 17.8 LBS
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421-DS-13-S Extension Box Drive Shaft 1.062” Bearing Cap Dia
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421-DS-12-S Extension Box Drive Shaft 1.077” Bearing Cap Dia
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421-DS-13-X Extension Box Drive Shaft 1.217” Bearing Cap Dia
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421-DS-12-X Extension Box Drive Shaft 1.328” Bearing Cap Dia
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421-AT-12 Extension Box Drive Shaft Alignment Tool 1.370” x 39.000” OAL
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This Part has options, please click the button below to order.
421-EB-12-B Extension Box Kit 13.5° Transom Angle x 12.000” Straight Back, Black
IMCO Standard Height Extension Box Only
This is the most advanced, easy to install, state of the art standard
box on the market today. The torsional drive shaft helps cushion the
shock to the outdrive when shifting in and out of gear, and on and off
throttle operations. Inferior designed competitor's boxes use a drive shaft
that is solid mounted to the flywheel, doing away with your coupler.
Their units literally hammer the internal components in your drive,
which rapidly accelerates failure.
IMCO's torsional driveshaft and the stock MerCruiser rubber
coupler are designed to absorb shock resulting from extreme high
performance applications and rough water conditions.
356 T-6 cast aluminum transom motor mount brackets available
for both neutral and 3"lift extension boxes.
Lightweight super strong cast 356 T-6 aluminum extension
boxes, available in 12" neutral set-back or 12" set-back with 3" lift.
356 T-6 aluminum side mount steering brackets allows
ample mounting clearance for optimum K-Plane placement - clears
most exhaust ports, swim brackets, etc. - keeps rams on pivot center line.
EXTENSION BOX KITS "AVAILABLE IN A 3.000" LIFT"
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421-EB-12-S Extension Box Kit 13.5° Transom Angle x 12.000” Straight Back, Silver
IMCO Standard Height Extension Box Only
This is the most advanced, easy to install, state of the art standard
box on the market today. The torsional drive shaft helps cushion the
shock to the outdrive when shifting in and out of gear, and on and off
throttle operations. Inferior designed competitor's boxes use a drive shaft
that is solid mounted to the flywheel, doing away with your coupler.
Their units literally hammer the internal components in your drive,
which rapidly accelerates failure.
IMCO's torsional driveshaft and the stock MerCruiser rubber
coupler are designed to absorb shock resulting from extreme high
performance applications and rough water conditions.
356 T-6 cast aluminum transom motor mount brackets available
for both neutral and 3"lift extension boxes.
Lightweight super strong cast 356 T-6 aluminum extension
boxes, available in 12" neutral set-back or 12" set-back with 3" lift.
356 T-6 aluminum side mount steering brackets allows
ample mounting clearance for optimum K-Plane placement - clears
most exhaust ports, swim brackets, etc. - keeps rams on pivot center line.
EXTENSION BOX KITS "AVAILABLE IN A 3.000" LIFT"
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421-WP-8-B Extension Box Side Mount Bracket Black
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421-WP-8-S Extension Box Side Mount Bracket Silver
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421-HC-2 Helm Control 120 CC (1 or 2 Pumps) HELM CONTROL SPECIFICATIONS MERCURY PUMP SPECIFICATIONS 1. FLOW RATE 2 TO 8 GPM 1. FLOW RATE 1 1/2 TO 3 1/2 GPM 2. MAX PRESSURE 2500 PSI 2. MAX PRESSURE 1300 PSI 3. OPEN CENTER NON LOAD REACTION 4. 3/4" O-RING PORTS
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