Parts for MerCruiser 140 GM 181 I / L4 1972-1978 Exhaust Manifold Assembly

Revise Search: All Models > 140 GM 181 I / L4 1972-1978 > 3332138 - 5157668 > Exhaust Manifold Assembly

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• View diagram and parts list below.
Each product listed is an OEM or aftermarket equivalent part. [ Example ]

Engine section

Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
Each product listed is an OEM or aftermarket equivalent part. [ Example ]

#1	52390A 1	EXHAUST MANIFOLD ASSEMBLY (1 required per assembly)
		52390A 1 - 52390A 1 - MANIFOLD ASSY O [ More info ] Unavailable Replaced by -96705A 1
		96705A 1 - Manifold Assembly [ More info ] $917.50 $306.90 2 in stock.
		18-1955-1 - Manifold, 96705A1 for Rochester - See Detail Page for Important Info [ More info ] $439.99 $424.52 2 in stock.
		MC-1-96705 - Mercruiser Manifold, Rochester Carb, See Detail Page [ More info ] $395.00 $308.50 2 in stock.
		MC-1-52390 - Mercruiser Manifold, 140HP (49 #) [ More info ] $375.00 $292.88 4 in stock.
#2	16-49545	STUD, EXHAUST MANIFOLD TO EXHAUST ELBOW (1 3/4") (4 required per assembly)
		16-49545 - Stud - Priced Individually [ More info ] $2.20 10+ in stock.
#3	22-68307	PLUG, PIPE - EXHAUST MANIFOLD (1/8-27) (1 required per assembly)
		22-68307 - Plug [ More info ] $9.20 10+ in stock.
#4	22-48118	PLUG, EXHAUST MANIFOLD (1 required per assembly)
		22-48118 - Plug, NLA [ More info ] $8.50 10+ in stock.
#5	22-32561	PLUG, PIPE - EXHAUST MANIFOLD (1/4-18) (1 required per assembly)
		22-32561 - Plug - Priced Individually [ More info ] $5.00 10+ in stock.
#6	32-53370	TUBE, HEAT - EXHAUST MANIFOLD (1 required per assembly)
		32-53370 - Tubing, NLA [ More info ] $55.00 10+ in stock.
#7	10-33231	SCREW, PLUG - EXHAUST MANIFOLD (1/2") (2 required per assembly)
		10-33231 - 10-33231 - SCREW (1/2 In.) O [ More info ] Unavailable Replaced by 10-98257
		10-98257 - Screw [ More info ] $0.80 10+ in stock.
#8	10-52143	SCREW, EXHAUST MANIFOLD TO CYLINDER HEAD (4 3/4") (4 required per assembly)
		10-52143 - Screw, NLA [ More info ] $3.00 10+ in stock.
#9	12-20553	WASHER, EXHAUST MANIFOLD SCREW (6 required per assembly)
		12-20553 - Washer - Priced Individually [ More info ] $1.10 10+ in stock.
#10	16-52093	STUD, EXHAUST MANIFOLD TO CYLINDER HEAD (5 1/4") (2 required per assembly)
		16-52093 - Stud, NLA [ More info ] $10.50 10+ in stock.
#11	11-49838	NUT, EXHAUST MANIFOLD STUD (2 required per assembly)
		11-49838 - Nut - Priced Individually [ More info ] $0.80 10+ in stock.
#12	60252	END CAP/CONNECTOR, EXHAUST MANIFOLD (FRONT) (1 required per assembly)
		60252 - 60252 - END CAP O [ More info ] Unavailable Replaced by -60252A 2
		60252A 2 - End Cap Assembly [ More info ] $124.17 Available to order: Usually ships within 8 days.
		18-4009 - End Cap, 60252A 2 [ More info ] $79.49 $64.08 3 in stock.
		1-60252 - End Plate [ More info ] $42.00 $32.80 10+ in stock.
#13	27-48043 1	GASKET, END CAP/CONNECTOR TO EXHAUST MANIFOLD (1 required per assembly)
		27-48043 1 - Gasket - Priced Individually [ More info ] $4.20 Available to order: Usually ships within 8 days.
		18-2832-1-9 - Manifold End Cap Gasket, Pkg of 2 [ More info ] $7.48 $5.45 10+ in stock.
#14	10-25038	SCREW, END CAP/CONNECTOR TO EXH. MANIFOLD (7/8")- (4 required per assembly) SERIAL 00000000-04481625
		10-25038 - Screw - Priced Individually [ More info ] $0.80 10+ in stock.
		10-23703 - Screw, NLA [ More info ] $2.00 10+ in stock.
#14	10-24234	SCREW, END CAP/CONNECTOR TO EXH. MANIFOLD (1") (4 required per assembly) SERIAL 04481626-09999999
		10-24234 - 10-24234 - SCREW (.312-18 x O [ More info ] Unavailable Replaced by 10-35386
		10-35386 - Screw - Priced Individually [ More info ] $0.80 10+ in stock.
#15	54-60517	CLAMP, WIRING HARNESS TO EXHAUST MANIFOLD (3/8") (1 required per assembly) SERIAL 03332138-03462607
		54-60517 - CLAMP O NLA [ More info ] Unavailable
#15	54-60516	CLAMP, WIRING HARNESS TO EXHAUST MANIFOLD (9/16") (1 required per assembly) SERIAL 03332138-03462607
		54-60516 - Clamp, NLA [ More info ] $11.00 1 in stock.
#16	10-29240	SCREW, WIRING HARNESS CLAMP FASTENING (5/8") (2 required per assembly) SERIAL 03332138-03462607
		10-29240 - 10-29240 - SCREW O [ More info ] Unavailable Replaced by 10-32228
		10-32228 - Screw - Priced Individually [ More info ] $1.40 10+ in stock.
#17	12-24676	WASHER, WIRING HARNESS CLAMP SCREW (3 required per assembly) SERIAL 03462608-09999999
		12-24676 - Washer [ More info ] $1.10 Available to order: Usually ships within 8 days.
#18	54870	END CAP, EXHAUST MANIFOLD (REAR) (3 required per assembly) SERIAL 00000000-04481625
		54870 - End Cap [ More info ] $8.15 3 in stock.
		73813A 1 - End Cap Assembly [ More info ] $37.75 2 in stock.
		18-1990 - Block Off Plate, 73813A1 [ More info ] $31.99 $26.71 1 in stock.
		1-73813 - End Plate [ More info ] $25.00 $19.52 4 in stock.
		1-54870 - 1-73813 [ More info ] $26.00 $20.31 Available to order: Usually ships within 8 days.
#18	73813A 1	END CAP, EXHAUST MANIFOLD (REAR) (1 required per assembly) SERIAL 04481626-09999999
#19	27-73814	GASKET, END CAP TO EXHAUST MANIFOLD (1 required per assembly) SERIAL 04481626-09999999
		27-73814 - Gasket - Priced Individually [ More info ] $1.94 10+ in stock.
		27-73814 1 - Gasket - Priced Individually [ More info ] $2.00 10+ in stock.
		27-807218 - Gasket [ More info ] $3.30 10+ in stock.
		18-0928-9 - Gasket 27-73814 2-Pack [ More info ] $5.68 $5.20 Available to order: Usually ships within 8 days.
#20	10-25299	SCREW, END CAP TO EXHAUST MANIFOLD (3/4") (4 required per assembly) SERIAL 04481626-09999999
		10-25299 - Screw - Priced Individually [ More info ] $0.30 10+ in stock.
#21	27-53354	GASKET, EXHAUST MANIFOLD TO CYLINDER HEAD (1 required per assembly)
		27-53354 - Gasket [ More info ] $13.70 6 in stock.
		18-2912-1 - Gasket [ More info ] $10.49 $7.80 3 in stock.
#22	60426A 1	EXHAUST ELBOW ASSEMBLY (1 required per assembly) SERIAL 00000000-04512155
		60426A 1 - 60426A 1 - ELBOW ASSY O [ More info ] Unavailable Replaced by -76351A 1
		76351A 1 - 76351A 1 - ELBOW ASSEMBLY Ex O [ More info ] Unavailable Replaced by -76351A 2
		76351A 2 - 76351A 2 - ELBOW ASSY O [ More info ] Unavailable Replaced by -76351A04
		76351A04 - Exhaust Elbow [ More info ] $325.00 In stock
		18-1971 - Elbow 76351A2 [ More info ] $189.99 $147.11 2 in stock.
		MC-20-76351 - Mercury Riser (24 #) [ More info ] $210.00 $164.01 6 in stock.
		MC-20-60426 - Mercury Riser (24 #) [ More info ] $220.00 $171.82 5 in stock.
#22	76351A 1	EXHAUST ELBOW ASSEMBLY (1 required per assembly) SERIAL 04512156-09999999
#23	32-58616A 1	TUBE, WATER SEPERATION - EXHAUST ELBOW (1 required per assembly) SERIAL 00000000-04512155
		32-58616A 1 - Tube Assembly [ More info ] $22.10 10+ in stock.
		32-58616A 2 - Tubing [ More info ] $133.50 10+ in stock.
#25	22-33198	PLUG, EXHAUST ELBOW (4 required per assembly)
		22-33198 - Plug [ More info ] $1.15 5 in stock.
		22-33198A 1 - Plug [ More info ] $2.50 10+ in stock.
		22-41622 - Pipe Plug [ More info ] $8.10 10+ in stock.
		18-4258 - Pipe Plug, 3/4 x 14 [ More info ] $5.14 $3.68 9 in stock.
#26	27-99777 2	GASKET, EXHAUST ELBOW TO EXHAUST MANIFOLD (1 required per assembly)
		27-99777 2 - Gasket - Priced Individually [ More info ] $3.60 10+ in stock.
		27-99777Q02 - Gasket [ More info ] $3.80 Available to order: Usually ships within 8 days.
#27	13-37459	LOCKWASHER, EXHAUST ELBOW TO EXHAUST MANIFOLD STUD (4 required per assembly)
		13-37459 - LockWasher , Priced Individually [ More info ] $0.50 5 in stock.
		13-35048 - LockWasher - Priced Individually [ More info ] $0.90 $0.62 10+ in stock.
#29	32-47642	HOSE ASSEMBLY, INLET - WATER DISTRIBUTION BLOCK TO DRIVE UNI (1 required per assembly)
		32-47642 - Hose -49 Inch [ More info ] $22.08 2 in stock.
#30	54-32523	CLAMP, INLET HOSE TO WATER DISTRIBUTION BLOCK AND DRIVE UNIT (2 required per assembly)
		54-32523 - Clamp - Priced Individually [ More info ] $4.60 3 in stock.
		54-815504310 - Clamp [ More info ] $13.70 4 in stock.
#31	47587A 2	BLOCK ASSEMBLY, WATER DISTRIBUTION - CYLINDER HEAD (1 required per assembly) SERIAL 03332138-03462607
		47587A 2 - 47587A 2 - HOUSING ASSEMBLY O [ More info ] Unavailable Replaced by -861493A 3
		861493A 3 - Thermostat Housing Assembly [ More info ] $92.58 1 in stock.
		861493A07 - Thermostat Housing [ More info ] $138.33 In stock
		18-1993 - Thermostat Housing - End Rise - Special Order - No Returns [ More info ] $264.99 $232.09 In stock - special order item.
		18-1910 - Thermostat Housing Kit, 861493A3 [ More info ] $118.49 $98.90 In stock
		MC-29-60372 - Thermostat Housing [ More info ] $36.00 $28.12 Available to order: Usually ships within 8 days.
		MC-29-47587 - Thermostat Housing [ More info ] $40.00 $31.24 1 in stock.
#32	22-32803	PLUG, PIPE - WATER DISTRIBUTION BLOCK (1 required per assembly) SERIAL 03332138-03462607
		22-32803 - Plug [ More info ] $5.10 Available to order: Usually ships within 8 days.
		18-4264 - Pipe Plug, 3/8-18 NPT [ More info ] $4.11 $3.51 Available to order: Usually ships within 8 days.
#31	63908A 2	BLOCK ASSEMBLY, WATER DISTRIBUTION (1 required per assembly) SERIAL 03462608-09999999
		63908A 2 - 63908A 2 - BLOCK ASSY O [ More info ] Unavailable Replaced by -47587A 2
#34	27-814680	GASKET, WATER DISTRIBUTION BLOCK (1 required per assembly)
		27-814680 - 27-814680 - GASKET * [ More info ] Unavailable Replaced by 27-814680 1
		27-814680 1 - Thermostat Housing Gasket [ More info ] $2.60 10+ in stock.
#35	10-21077	SCREW, WATER DISTRIBUTION BLOCK TO CYLINDER HEAD (7/8") (2 required per assembly)
		10-21077 - Screw, NLA [ More info ] $1.60 10+ in stock.
#36	22-53509	ELBOW, WATER DISTRIBUTION BLOCK (1 required per assembly)
		22-53509 - Elbow, NLA [ More info ] $19.00 10+ in stock.
#37	59078	THERMOSTAT (1 required per assembly)
		59078 - Thermostat -140 [ More info ] $21.08 Available to order: Usually ships within 8 days.
		18-3550 - Thermostat 59078 [ More info ] $19.99 $18.20 9 in stock.
		59078Q 3 - Thermostat - Priced Individually [ More info ] $19.43 Available to order: Usually ships within 8 days.
#38	27-47590	GASKET, THERMOSTAT COVER (1 required per assembly)
		27-47590 - Gasket - Priced Individually [ More info ] $1.44 3 in stock.
		27-47590 1 - Gasket - Priced Individually [ More info ] $3.20 10+ in stock.
		27-47590Q01 - Gasket [ More info ] $2.60 Available to order: Usually ships within 8 days.
#39	60372A 1	COVER ASSEMBLY, THERMOSTAT - WATER DISTRIBUTION BLOCK (1 required per assembly)
		60372A 1 - Cover Assembly [ More info ] $39.50 2 in stock.
		60372A 2 - 60372A 2 - COVER ASSEMBLY O [ More info ] Unavailable Replaced by -47587A 2
#40	10-60374	SCREW, THERMOSTAT COVER ATTACHING (1 3/4") (2 required per assembly)
		10-60374 - 10-60374 - SCREW (1.75 In.) O [ More info ] Unavailable Replaced by 10-75206
		10-75206 - Screw [ More info ] $1.35 2 in stock.
		10-881892 - Screw [ More info ] $2.80 Available to order: Usually ships within 8 days.
#41	12-36533	WASHER, THERMOSTAT COVER SCREW (1 required per assembly)
		12-36533 - Washer [ More info ] $1.10 Available to order: Usually ships within 8 days.
#42	10-52447	SCREW, THERMOSTAT COVER ATTACHING (2 1/4") (1 required per assembly) SERIAL 03462608-03771644
		10-52447 - 10-52447 - BOLT O [ More info ] Unavailable Replaced by 10-67450
		10-67450 - Screw - Priced Individually [ More info ] $3.00 10+ in stock.
#43	32-52481	HOSE, WATER DISTRIBUTION BLOCK TO END CAP/CONNECTOR (1 required per assembly)
		32-52481 - Hose [ More info ] $38.00 $32.54 Available to order: Usually ships within 8 days.
		18-70930 - Hose, 32-52481 [ More info ] $26.99 $22.05 Available to order: Usually ships within 8 days.
#44	54-32780	CLAMP, HOSE TO WATER DISTRIBUTION BLOCK AND END CAP/CONNECTO (2 required per assembly)
		54-32780 - 54-32780 - CLAMP O [ More info ] Unavailable Replaced by 54-815504220
		54-815504220 - Clamp [ More info ] $5.80 Available to order: Usually ships within 8 days.
#45	32-47640	HOSE, WATER DISTRIBUTION BLOCK TO WATER PUMP (1 required per assembly)
		32-47640 - 32-47640 - HOSE O [ More info ] Unavailable Replaced by 32-96879
		32-96879 - 32-96879 - HOSE O [ More info ] Unavailable Replaced by 32-8M0071007
		32-8M0071007 - Hose [ More info ] $40.10 $34.33 4 in stock.
		18-70931 - Hose, 32-96879, 311075 [ More info ] $28.99 $23.32 9 in stock.
#46	54-32781	CLAMP, HOSE TO WATER DISTRIBUTION BLOCK AND WATER PUMP (2 required per assembly)
		54-32781 - Clamp - Priced Individually [ More info ] $5.40 1 in stock.
		54-815504228 - Clamp [ More info ] $15.50 Available to order: Usually ships within 8 days.
#47	32877	COVER, WATER PUMP SERIAL # THRU (1 required per assembly) SERIAL 03332138-03462607
		32877 - Cover, Plug [ More info ] $16.20 $10.94 10+ in stock.
#48	54-38426	CLAMP, WATER PUMP COVER TO WATER PUMP (1 required per assembly) SERIAL 03332138-03462607
		54-38426 - 54-38426 - CLAMP O [ More info ] Unavailable Replaced by 54-43510
		54-43510 - 54-43510 - CLAMP O [ More info ] Unavailable Replaced by 54-815504412
		54-815504412 - Clamp [ More info ] $5.10 $2.86 7 in stock.