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Parts for MerCruiser 120 GM 153 I / L4 1972-1978 Cylinder Block, Piston & Bearings

#1 839-3548 CYLINDER BLOCK ASSEMBLY (1 required per assembly) SEE NOTE
839-3548 - CYLINDER BLOCK AS O NLA
 

About Mercury Marine

OEM Part

839-3548 - CYLINDER BLOCK AS O NLA [ More info ]
Unavailable
#2 19-34270 PLUG, EXPANSION - CYLINDER BLOCK (1 5/8"DIA.) (2 required per assembly)
EXPANSION PLUG (1.625) 19-34270
19-34270

About Mercury Marine

OEM Part

19-34270 - Freeze Plug, 1-5/8 Inch [ More info ]

Add to shopping cart $7.00
4 in stock. Explain stock levels

#2 19-34271 PLUG, EXPANSION - CYLINDER BLOCK (2"DIA.) (1 required per assembly)
EXPANSION PLUG (2.00) 19-34271
 

About Mercury Marine

OEM Part

19-34271 - Plug [ More info ]

Add to shopping cart $19.50 $13.17
10+ in stock. Explain stock levels

#- 19-37831 PLUG, OIL CHANNEL - CYLINDER BLOCK (1 required per assembly)
25-37831 - O RING            O - Replaced by 25-20034
 

This part has been superseded.

25-37831 - 25-37831 - O RING O [ More info ]
Unavailable
Replaced by 25-20034
O RING ,NLA 25-20034
 

About Mercury Marine

OEM Part

25-20034 - , O-Ring [ More info ]

Add to shopping cart $4.50
10+ in stock. Explain stock levels

#3 19-34488 PLUG, EXPANSION - CAMSHAFT BEARING HOLE (1 required per assembly)
2272640 19-34488
 

About Mercury Marine

OEM Part

19-34488 - Plug [ More info ]

Add to shopping cart $3.70
10+ in stock. Explain stock levels

#4 19-34487 PLUG, PIPE - CYLINDER BLOCK (3/8") (1 required per assembly)
2236373 19-34487
 

About Mercury Marine

OEM Part

19-34487 - PLUG [ More info ]

Add to shopping cart $2.80
10+ in stock. Explain stock levels

PLUG (.375-18) Hex - St 22-36373
 

About Mercury Marine

OEM Part

22-36373 - Plug [ More info ]

Add to shopping cart $4.20
4 in stock. Explain stock levels

#5 17-35465 PIN, DOWEL -CYLINDER BLOCK TO CYLINDER HEAD (2 required per assembly)
PIN Dowel (.312) 17-35465
 

About Mercury Marine

OEM Part

17-35465 - Pin -Dowel - Priced Individually [ More info ]

Add to shopping cart $4.90
1 in stock. Explain stock levels

#6 23-35168 BEARING, DISTRIBUTOR PILOT SHAFT (1 required per assembly)
23-35168 - BEARING           O NLA
23-35168

About Mercury Marine

OEM Part

23-35168 - BEARING O NLA [ More info ]
Unavailable
#7&8 BEARING, CAMSHAFT (1 required per assembly) SEE M/C SERVICE BULLETIN 83-19
#9 736-2343 PISTON AND PISTON PIN ASSEMBLY (.001 O.S.) (AR required per assembly)
PISTON ASSEMBLY 736-2343
736-2343

About Mercury Marine

OEM Part

736-2343 - Piston & Pin - Std [ More info ]

Add to shopping cart $55.41
Available to order: Usually ships within 8 days. Explain stock levels

Piston Kit
18-4180

About Sierra Marine

OEM Match

18-4180 - Piston, 736-2343 - Special Order - No Returns [ More info ]

Add to shopping cart $69.49
In stock - special order item. Explain stock levels

#9 733-2279 PISTON AND PISTON PIN ASSEMBLY (.030 O.S.) (AR required per assembly)
PISTON & PIN-.030,NLA 733-2279
733-2279

About Mercury Marine

OEM Part

733-2279 - Piston & Pin -.030, NLA [ More info ]

Add to shopping cart $50.00
10+ in stock. Explain stock levels

#10 39-67119 RING,PISTON (STANDARD) (4 required per assembly) SERIAL 03377341-03506318
3967132 39-67119
 

About Mercury Marine

OEM Part

39-67119 - Piston Ring - Priced Individually [ More info ]

Add to shopping cart $26.50
10+ in stock. Explain stock levels

RING 39-67132
39-67132

About Mercury Marine

OEM Part

39-67132 - Piston Ring - Std [ More info ]

Add to shopping cart $44.66
9 in stock. Explain stock levels

Piston Rings
18-3942

About Sierra Marine

OEM Match

18-3942 - Rings, 39-67132 - Special Order - No Returns [ More info ]

Add to shopping cart $63.49 $60.32
In stock - special order item. Explain stock levels

#10 39-67121 RING, PISTON (.030 O.S.) (AR required per assembly) SERIAL 03377341-03506318
39-67121 - PISTON RING @2    O - Replaced by 39-67134
 

This part has been superseded.

39-67121 - 39-67121 - PISTON RING @2 O [ More info ]
Unavailable
Replaced by 39-67134
PISTON RING-.030,NLA 39-67134
39-67134

About Mercury Marine

OEM Part

39-67134 - Piston Ring -.030, NLA [ More info ]

Add to shopping cart $50.00
10+ in stock. Explain stock levels

#10 39-67132 RING, PISTON (STANDARD) (4 required per assembly) SERIAL 03506319-09999999
#10 39-67134 RING, PISTON (.030 O.S.) (AR required per assembly) SERIAL 03506319-09999999
#11 23-52256 BEARING UNIT, CRANLSHAFT MAIN (STANDARD) (4 required per assembly)
23-52256 - BEARING UNIT      O - Replaced by 23-85675
 

This part has been superseded.

23-52256 - 23-52256 - BEARING UNIT O [ More info ]
Unavailable
Replaced by 23-85675
ER 23-818469     ,NLA 23-85675
23-85675

About Mercury Marine

OEM Part

23-85675 - Er 23-818469 , NLA [ More info ]

Add to shopping cart $22.00
10+ in stock. Explain stock levels

#11 23-52257 BEARING UNIT, CRANKSHAFT MAIN (.001 U.S.) (AR required per assembly)
23-52257 - BEARING UNIT      O - Replaced by 23-85676
 

This part has been superseded.

23-52257 - 23-52257 - BEARING UNIT O [ More info ]
Unavailable
Replaced by 23-85676
23818470 23-85676
 

About Mercury Marine

OEM Part

23-85676 - Ord 23-818470 [ More info ]

Add to shopping cart $12.50
8 in stock. Explain stock levels

#11 23-52258 BEARING UNIT, CRANKSHAFT MAIN (.002 U.S.) (AR required per assembly)
23-52258 - NLA               O NLA
 

About Mercury Marine

OEM Part

23-52258 - NLA O NLA [ More info ]
Unavailable
#11 23-52259 BEARING UNIT, CRANKSHAFT MAIN (.010 U.S.) (AR required per assembly)
23-52259 - BEARING UNIT      O - Replaced by 23-85713
 

This part has been superseded.

23-52259 - 23-52259 - BEARING UNIT O [ More info ]
Unavailable
Replaced by 23-85713
23818471 23-85713
 

About Mercury Marine

OEM Part

23-85713 - Ord 23-818471 [ More info ]

Add to shopping cart $22.88
5 in stock. Explain stock levels

#11 23-52260 BEARING UNIT, CRANKSHAFT MAIN (.020 U.S.) (AR required per assembly)
23-52260 - BEARING UNIT      O - Replaced by 23-85714
 

This part has been superseded.

23-52260 - 23-52260 - BEARING UNIT O [ More info ]
Unavailable
Replaced by 23-85714
23-85714 - BEARING           O NLA
 

About Mercury Marine

OEM Part

23-85714 - BEARING O NLA [ More info ]
Unavailable
#12 23-52261 BEARING UNIT, CRANKSHAFT MAIN - REAR (STANDARD) (1 required per assembly)
23-52261 - BEARING UNIT      O - Replaced by 23-85715
 

This part has been superseded.

23-52261 - 23-52261 - BEARING UNIT O [ More info ]
Unavailable
Replaced by 23-85715
23818469 23-85715
23-85715

About Mercury Marine

OEM Part

23-85715 - Bearing [ More info ]

Add to shopping cart $25.00
10+ in stock. Explain stock levels

23-818469 - BEARING SET       O - Replaced by 23-818469001
 

This part has been superseded.

23-818469 - 23-818469 - BEARING SET O [ More info ]
Unavailable
Replaced by 23-818469001
BEARING SET 23-818469001
23-818469001

About Mercury Marine

OEM Part

23-818469001 - Bearing Set - Std [ More info ]

Add to shopping cart $150.75
Available to order: Usually ships within 8 days. Explain stock levels

Std. Main Bearings
18-1317

About Sierra Marine

OEM Match

18-1317 - Bearing, 23-818469 [ More info ]

Add to shopping cart $178.49 $141.13
In stock Explain stock levels

#12 23-52262 BEARING UNIT, CRANKSHAFT MAIN - REAR (.001 U.S.) (AR required per assembly)
23-52262 - BEARING UNIT      O - Replaced by 23-85670
 

This part has been superseded.

23-52262 - 23-52262 - BEARING UNIT O [ More info ]
Unavailable
Replaced by 23-85670
23-85670 - BEARING           O - Replaced by 23-818470
 

This part has been superseded.

23-85670 - 23-85670 - BEARING O [ More info ]
Unavailable
Replaced by 23-818470
23-818470 - BEARING SET       O - Replaced by 23-818470001
23-818470

This part has been superseded.

23-818470 - 23-818470 - BEARING SET O [ More info ]
Unavailable
Replaced by 23-818470001
BEARING SET 23-818470001
 

About Mercury Marine

OEM Part

23-818470001 - Bearing Set [ More info ]

Add to shopping cart $147.67
Available to order: Usually ships within 8 days. Explain stock levels

#12 23-52263 BEARING UNIT, CRANKSHAFT MAIN - REAR (.002 U.S.) (AR required per assembly)
23-52263 - BEARING UNIT      O - Replaced by 23-85671
 

This part has been superseded.

23-52263 - 23-52263 - BEARING UNIT O [ More info ]
Unavailable
Replaced by 23-85671
23-85671 - BEARING           O NLA
 

About Mercury Marine

OEM Part

23-85671 - BEARING O NLA [ More info ]
Unavailable
#12 23-52264 BEARING UNIT, CRANKSHAFT MAIN - REAR (.010 U.S.) (AR required per assembly)
23-52264 - BEARING UNIT      O - Replaced by 23-85718
 

This part has been superseded.

23-52264 - 23-52264 - BEARING UNIT O [ More info ]
Unavailable
Replaced by 23-85718
23-85718 - BEARING           O - Replaced by 23-818471
 

This part has been superseded.

23-85718 - 23-85718 - BEARING O [ More info ]
Unavailable
Replaced by 23-818471
23-818471 - BEARING SET       O - Replaced by 23-818471001
23-818471

This part has been superseded.

23-818471 - 23-818471 - BEARING SET O [ More info ]
Unavailable
Replaced by 23-818471001
BEARING SET-.010 23-818471001
23-818471001

About Mercury Marine

OEM Part

23-818471001 - Bearing Set -.010 [ More info ]

Add to shopping cart $147.00
Available to order: Usually ships within 8 days. Explain stock levels

.010 Main Bearings
18-1316

About Sierra Marine

OEM Match

18-1316 - Main Bearing, 23-818471 [ More info ]

Add to shopping cart $160.41
1 in stock. Explain stock levels

#12 23-52265 BEARING UNIT, CRANKSHAFT MAIN - REAR (.020 U.S.) (AR required per assembly)
23-52265 - BEARING UNIT      O - Replaced by 23-85719
 

This part has been superseded.

23-52265 - 23-52265 - BEARING UNIT O [ More info ]
Unavailable
Replaced by 23-85719
23-85719 - BEARING           O - Replaced by 23-818472
 

This part has been superseded.

23-85719 - 23-85719 - BEARING O [ More info ]
Unavailable
Replaced by 23-818472
BEARING SET 23-818472
23-818472

About Mercury Marine

OEM Part

23-818472 - Bearing Set -.020 [ More info ]

Add to shopping cart $130.00
Available to order: Usually ships within 8 days. Explain stock levels

#13 49954 CAP, REAR - CRANKSHAFT BEARING (1 required per assembly)
49954 - GM# 3928975       O NLA
 

About Mercury Marine

OEM Part

49954 - GM# 3928975 O NLA [ More info ]
Unavailable
#14 35310 CAP, INTERMEDIATE AND FRONT - CRANKSHAFT BEARING (4 required per assembly)
35310 - NLA               O NLA
 

About Mercury Marine

OEM Part

35310 - NLA O NLA [ More info ]
Unavailable
#-- 15-34533 SHIM UNIT, BEARING CAP - FRONT AND INTERMEDIATE (AR required per assembly)
SHIM,NLA 15-34533
 

About Mercury Marine

OEM Part

15-34533 - Shim, NLA [ More info ]

Add to shopping cart $15.00
2 in stock. Explain stock levels

#-- 15-34534 SHIM UNIT, BEARING CAP -REAR (AR required per assembly)
15-34534 - SHIM              O NLA
 

About Mercury Marine

OEM Part

15-34534 - SHIM O NLA [ More info ]
Unavailable
#15 10-46717 BOLT, BEARING CAP TO BLOCK (2 31/32") (10 required per assembly) SERIAL 03377341-03825578
10-46717 - BOLT (2 31/32 In. O NLA
 

About Mercury Marine

OEM Part

10-46717 - BOLT (2 31/32 In. O NLA [ More info ]
Unavailable
#16 16-48350 STUD, BEARING CAP AND OIL PUMP ATTACHING (AR required per assembly) SERIAL 03825579-09999999
16-48350 - NLA               O NLA
 

About Mercury Marine

OEM Part

16-48350 - NLA O NLA [ More info ]
Unavailable
#17 26-58203 OIL SEAL UNIT, CRANKSHAFT REAR BEARING (1 required per assembly)
26814622 26-58203
26-58203

About Mercury Marine

OEM Part

26-58203 - Oil Seal [ More info ]

Add to shopping cart $30.00
8 in stock. Explain stock levels

SEAL Oil 26-814622
26-814622

About Mercury Marine

OEM Part

26-814622 - Seal [ More info ]

Add to shopping cart $98.59 $56.78
10 in stock. Explain stock levels

Rear Main Seal
18-1211

About Sierra Marine

OEM Match

18-1211 - Seal, 26-814622 [ More info ]

Add to shopping cart $58.99 $50.25
1 in stock. Explain stock levels

#-- 34543 VALVE, BY-PASS - OIL FILTER (AR required per assembly)
VALVE 34543
34543

About Mercury Marine

OEM Part

34543 - Valve [ More info ]

Add to shopping cart $13.10
Available to order: Usually ships within 8 days. Explain stock levels

#18 22-64425 FITTING, EXTENTION - CYLINDER BLOCK (1 required per assembly)
FITTING,NLA 22-64425
 

About Mercury Marine

OEM Part

22-64425 - Fitting, NLA [ More info ]

Add to shopping cart $25.00
10+ in stock. Explain stock levels

#19 22-64426 FITTING, DRAIN - CYLINDER BLOCK (1 required per assembly)
22-64426 - DRAIN COCK        O - Replaced by 22-87238
 

This part has been superseded.

22-64426 - 22-64426 - DRAIN COCK O [ More info ]
Unavailable
Replaced by 22-87238
22-87238 - FITTING           O - Replaced by 22-16951A 1
 

This part has been superseded.

22-87238 - 22-87238 - FITTING O [ More info ]
Unavailable
Replaced by 22-16951A 1
2216951Q1 22-16951A 1
22-16951A 1

About Mercury Marine

OEM Part

22-16951A 1 - Drain Plug Kit [ More info ]

Add to shopping cart $6.00
5 in stock. Explain stock levels

PLUG-DRAIN Note: must be ordered in multiples of 2 22-16951Q 1
22-16951Q 1

About Mercury Marine

OEM Part

22-16951Q 1 - Drain Plug - Priced Individually [ More info ]

Add to shopping cart $10.80
7 in stock. Explain stock levels

Cyl. Block Drain Tap
18-4218

About Sierra Marine

OEM Match

18-4218 - Drain 22-16951A1 [ More info ]

Add to shopping cart $9.99 $7.87
10+ in stock. Explain stock levels

PLUG-DRAIN Note: must be ordered in multiples of 2   22 16951T 1
22 16951T 1

About Mercury Marine

OEM Part

22-16951T 1 - Drain Plug - Priced Individually [ More info ]

Add to shopping cart $10.80
6 in stock. Explain stock levels