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Mercruiser Model 496 MAG (H.O.) HIGH OUTPUT 425 HP

 
Key Part Number Description Qty Req Comments Price Qty on Hand  
- 862762A1 LONG BLOCK (Base) SN# 0M376087 & Below
- 863815A02 LONG BLOCK (Base) SN# 0M376088 THRU 0M672040
- 865273A01 LONG BLOCK (Base)(GM Code 4XW) SN# 0M672041 & Up
- 862764A1 LONG BLOCK (H.O.) SN# 0M376090 & Below
- 863817A02 LONG BLOCK (H.O.) SN# 0M376091 THRU 0M667237
- 865275A01 LONG BLOCK (H.O.)(GM Code 4XA) SN# 0M667238 & Up
28 NSS NOT SOLD SEPARATE, ROD-Connecting 8
35 48341 PLUG, (.125-27 x .375), Oil Galley AR
4 881669 DRIVE, Oil Pump, Oil Pump
9 881595 SCREW, (M6 x 21), Crankshaft Position Sensor
6 845758 PIN, Dowel, Cylinder Head Locating 4
7 881667 SENSOR, Crankshaft Position
10 68219 NUT, (#10-32) Stainless Steel
11 805563 CONNECTOR, (.500 Inch NPTF To .500 Inch Inverted Flare)
12 878187 SENSOR ASSEMBLY, Knock 2
13 815425T SENDER ASSEMBLY, Oil Pressure
35 48340 PLUG, (.250-18 x .41), Oil Galley
35 34487 PLUG, (.375-18 x .42), Pipe - Oil Galley 2
14 881568 PLUG, Engine Coolant
14 881569 PLUG, (.250-18 x .54), Engine Coolant
21 35312 PIN, Dowel (1/4 In. Diameter) Camshaft Sprocket Location
16 881659 BEARING, Camshaft (pos 1)
17 881660 BEARING, Camshaft 2 (pos 2 / 5)
18 881661 BEARING, Camshaft 2 (pos 3 / 4)
19 94140 EXPANSION PLUG, Camshaft Bearing Hole
20 881627 CAMSHAFT (Base)
20 881628 CAMSHAFT (H.O.)
22 845941 RETAINER, Camshaft
23 881588 SCREW
24 881616 SPROCKET, Camshaft (Engine Block Code 1XW, 1XA,)
24 892640 SPROCKET, Camshaft (Base)(GM Code 4XW) SN# 0M672041 & Up
24 884037 SPROCKET, Camshaft (Engine Block Code 2XW, 2XA, 3XA, 3XW)
25 881570 SCREW, (M8 x 25) 3
26 881626 CHAIN, Camshaft Timing
27 881597 PISTON ASSEMBLY, .030 Oversize 4 (Port)
27 881596 PISTON ASSEMBLY, .030 Oversize 4 (Starboard)
27 883515 PISTON ASSEMBLY, Standard 4 (Port)
27 881592 PISTON ASSEMBLY, Standard 4 (Starboard)
29 883917 SCREW, Connecting Rod 16
30 883918 NUT, Connecting Rod 16
31 881602 RING KIT, Piston 8 (.030 Over Size)
31 881601 RING KIT, Piston 8 (Standard)
32 883239 BEARING, Connecting Rod 8
33 881567 PLUG, Oil Galley 4
34 881598 PLUG, Oil Galley 3
36 883514 PUMP, Circulating
37 881603 GASKET, Circulating Pump 2
38 862583 PULLEY, Circulating Pump
39 4010716 SCREW, (M8 x 16)
40 884036 SCREW, (M10 x 95)
40 881576 SCREW, (M10 x 65) 3
41 862915 STUD, (.250-18/M10 Special), Knock Sensor 2
42 826292 NUT, (M10) Brass/Nickel Plated, Knock Sensor 2
43 881879A6 SENSOR, (0 - 100 PSI), Oil Pressure
44 29085 FITTING, Elbow (45 Degree) 2
45 64013 FITTING, (.375 Male To .125 Female)
46 805059 FITTING, Reducer Bushing
47 26996 LOCKWASHER, (#10) Stainless Steel
48 38407 PLUG, (.500-14), Pipe