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Parts for MerCruiser 120 GM 153 I / L4 1972-1978 Cylinder Head & Rocker Cover

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 62234A 2 COVER ASSEMBLY, ROCKER (1 required per assembly) SEE NOTE SERIAL 00337341-00341707
COVER ASSY ,NLA 62234A 2  
62234A 2OEM Part 62234A 2 - Cover Assembly, NLA (more info) About Mercury Marine $175.00 $175.00 Add to shopping cart
7 in stock. Explain stock levels
#1 65635 COVER ASSEMBLY, ROCKER (1 required per assembly) SERIAL 03461708-09999999
COVER             O - Replaced by -65635A 5  
65635This part has been superseded. COVER O - Replaced by -65635A 5
(more info)
    UnavailableUnavailable Parts
COVER ASSY        O - Replaced by -65635A 8  
65635A 5This part has been superseded. COVER ASSY O - Replaced by -65635A 8
(more info)
    UnavailableUnavailable Parts
ROCKER COVER      O - Replaced by -65635A16  
65635A 8This part has been superseded. ROCKER COVER O - Replaced by -65635A16
(more info)
    UnavailableUnavailable Parts
ROCKER COVER      O NLA 65635A16
65635A16 ROCKER COVER O NLA
(more info)
    UnavailableUnavailable Parts
#2 37-55451 DECAL, ROCKER COVER (1 required per assembly) SERIAL 00000000-04626609
STUD              O - Replaced by 16-72452  
16-55451This part has been superseded. STUD O - Replaced by 16-72452
(more info)
    UnavailableUnavailable Parts
STUD              O NLA  
16-72452 STUD O NLA
(more info)
    UnavailableUnavailable Parts
#2 37-77246 DECAL, ROCKER COVER (1 required per assembly) SERIAL 04626610-09999999
DECAL             O NLA  
37-77246 DECAL O NLA
(more info)
    UnavailableUnavailable Parts
#3 10-35585 SCREW, ROCKER COVER TO CYLINDER HEAD (3/4") (5 required per assembly)
1098510 10-35585  
10-35585OEM Part 10-35585 - Screw - Priced Individually (more info) About Mercury Marine $0.34 $0.34 Add to shopping cart
9 in stock. Explain stock levels
SCREW             O - Replaced by 10-65746  
10-98510This part has been superseded. SCREW O - Replaced by 10-65746
(more info)
    UnavailableUnavailable Parts
SCREW (.250-20 x 10-65746 10-65746
10-65746OEM Part 10-65746 - Screw w/ Lw - Priced Individually (more info) About Mercury Marine $0.80 $0.80 Add to shopping cart
2 in stock. Explain stock levels
#3 10-38627 SCREW, ROCKER COVER TO CYLINDER HEAD (5/8") (2 required per assembly)
SCREW @5          O - Replaced by 10-98511  
10-38627This part has been superseded. SCREW @5 O - Replaced by 10-98511
(more info)
    UnavailableUnavailable Parts
SCREW             O - Replaced by 10-98254  
10-98511This part has been superseded. SCREW O - Replaced by 10-98254
(more info)
    UnavailableUnavailable Parts
SCREW (.250-20 x 10-98254 10-98254
10-98254OEM Part 10-98254 - Screw (more info) About Mercury Marine $0.40 $0.40 Add to shopping cart
Available to order:
Usually ships
within 8 days
#4 25-52188 GROMMET, ROCKER COVER (1 required per assembly)
GROMMET           O - Replaced by 23-8M0071559  
25-52188This part has been superseded. GROMMET O - Replaced by 23-8M0071559
(more info)
    UnavailableUnavailable Parts
BUSHING 23-8M0071559  
23-8M0071559OEM Part 23-8M0071559 - Grommet (more info) About Mercury Marine $6.00 $6.00 Add to shopping cart
Available to order:
Usually ships
within 8 days
#5 47957 CONNECTOR, VENT HOSE (1 required per assembly)
CONNECTOR,NLA 47957  
47957OEM Part 47957 - Connector, NLA (more info) About Mercury Marine $16.50 $16.50 Add to shopping cart
1 in stock. Explain stock levels
#6 54-64648 CLAMP, VENT HOSE TO CONNECTOR (1 required per assembly)
CLAMP ,NLA 54-64648  
54-64648OEM Part 54-64648 - Clamp, NLA (more info) About Mercury Marine $3.00 $3.00 Add to shopping cart
3 in stock. Explain stock levels
#7 57638 BAFFLE, ROCKER COVER (1 required per assembly)
57638T 57638  
57638OEM Part 57638 - Baffle (more info) About Mercury Marine $16.75 $16.75 Add to shopping cart
1 in stock. Explain stock levels
BAFFLE            O NLA  
57638T BAFFLE O NLA
(more info)
    UnavailableUnavailable Parts
#8 10-30663 SCREW, BAFFLE TO ROCKER COVER (4 required per assembly)
SCREW @10         O - Replaced by 10-62568  
10-30663This part has been superseded. SCREW @10 O - Replaced by 10-62568
(more info)
    UnavailableUnavailable Parts
SCREW (#10-16 x . 10-62568 10-62568
10-62568OEM Part 10-62568 - Screw - Priced Individually (more info) About Mercury Marine $0.80 $0.80 Add to shopping cart
10+ in stock. Explain stock levels
#9 12-20583 WASHER, ROCKER COVER (5 required per assembly) SERIAL 03377341-03461707
WASHER Note: must be ordered in multiples of 5 12-20583  
12-20583OEM Part 12-20583 - Washer - Priced Individually (more info) About Mercury Marine $1.10 $1.10 Add to shopping cart
10+ in stock. Explain stock levels
#10 54-46721 CLIP, ROCKER COVER SCREW (2 required per assembly) SERIAL 03377341-03461707
CLIP              O NLA  
54-46721 CLIP O NLA
(more info)
    UnavailableUnavailable Parts
#10 54-49542 CLAMP, INLET HOSE - ROCKER COVER SCREW (1 required per assembly)
CLAMP 54-49542  
54-49542OEM Part 54-49542 - Clamp (more info) About Mercury Marine $1.00 $1.00 Add to shopping cart
10+ in stock. Explain stock levels
#11 37-55540 DECAL, ROCKER COVER - "120 H.P." (1 required per assembly) SERIAL 00000000-04626609
DECAL             O NLA  
37-55540 DECAL O NLA
(more info)
    UnavailableUnavailable Parts
#12 37-77253 DECAL, WAVES (1 required per assembly) SERIAL 04626610-09999999
DECAL             O NLA  
37-77253 DECAL O NLA
(more info)
    UnavailableUnavailable Parts
#13 49288 OIL FILTTER CAP ASSEMBLY, ROCKER COVER (1 required per assembly)
17345 49288  
49288OEM Part 49288 - Cap (more info) About Mercury Marine $18.70 $18.70 Add to shopping cart
10 in stock. Explain stock levels
CAP 17345 17345
17345OEM Part 17345 - Oil Filler Cap (more info) About Mercury Marine $25.17 $25.17 Add to shopping cart
Available to order:
Usually ships
within 8 days
#14 27-52145 GASKET, ROCKER COVER TO CYLINDER HEAD (1 required per assembly)
GASKET            O - Replaced by 27-806452  
27-52145This part has been superseded. GASKET O - Replaced by 27-806452
(more info)
    UnavailableUnavailable Parts
GASKET            27-806452
27-806452 GASKET
(more info)
    UnavailableUnavailable Parts
Gasket 18-0347
18-0347OEM Match 18-0347 - Gasket 27-806452 (more info)
Replaces OEM #3852693
About Sierra Marine $11.99 $9.33 Add to shopping cart
4 in stock. Explain stock levels
#15 28-54797 KEY, VALVE STEM (2 PER VALVE) (8 required per assembly)
KEY @2            O - Replaced by 28-54797  1  
28-54797This part has been superseded. KEY @2 O - Replaced by 28-54797 1
(more info)
    UnavailableUnavailable Parts
KEY Note: must be ordered in multiples of 2 28-54797  1 28-54797 1
28-54797 1OEM Part 28-54797 1 - Key - Priced Individually (more info) About Mercury Marine $12.30 $8.31 Add to shopping cart
10+ in stock. Explain stock levels
#16 34515 CAP, VALVE STEM (8 required per assembly)
FI1100604 34515  
34515OEM Part 34515 - FI1100604 (more info) About Mercury Marine $1.47 $1.47 Add to shopping cart
5 in stock. Explain stock levels
CAP FI1100604 FI1100604
FI1100604OEM Part FI1100604 - Cap (more info) About Mercury Marine $17.80 $15.25 Add to shopping cart
Available to order:
Usually ships
within 8 days
#17 26-34217 SEAL, VALVE SPRING CAP (8 required per assembly)
SEAL Note: must be ordered in multiples of 8 26-34217 26-34217
26-34217OEM Part 26-34217 - Seal - Priced Individually (more info) About Mercury Marine $1.80 $1.80 Add to shopping cart
10+ in stock. Explain stock levels
Oil Seal 18-0518
18-0518OEM Match 18-0518 - Seal, 26-34217 (more info)
Replaces OEM #3854956
About Sierra Marine $1.99 $1.11 Add to shopping cart
2 in stock. Explain stock levels
#18 34518 SHIELD, VALVE SPRING CAP (8 required per assembly)
SHIELD            O - Replaced by -34518001 34518
34518This part has been superseded. SHIELD O - Replaced by -34518001
(more info)
    UnavailableUnavailable Parts
SHIELD            O NLA  
34518001 SHIELD O NLA
(more info)
    UnavailableUnavailable Parts
#19 24-35214 SPRING, VALVE (8 required per assembly)
SPRING 24-35214 24-35214
24-35214OEM Part 24-35214 - Spring (more info) About Mercury Marine $11.80 $11.80 Add to shopping cart
Available to order:
Usually ships
within 8 days
#20 11-34516 NUT, ROCKER VALVE ARM STUD (8 required per assembly)
NUT Note: must be ordered in multiples of 2 11-34516 11-34516
11-34516OEM Part 11-34516 - Nut - Priced Individually (more info) About Mercury Marine $3.30 $3.30 Add to shopping cart
8 in stock. Explain stock levels
#21 59340 BALL UNIT, ROCKER VALVE ARM STUD (8 required per assembly)
BALL Rocker Arm 59340 59340
59340OEM Part 59340 - Ball (more info) About Mercury Marine $2.70 $2.70 Add to shopping cart
10+ in stock. Explain stock levels
#22 34519 ARM, ROCKER VALVE (8 required per assembly)
ARM KIT 34519 34519
34519OEM Part 34519 - Arm (more info) About Mercury Marine $11.50 $11.50 Add to shopping cart
Available to order:
Usually ships
within 8 days
#23 936-5319 CYLINDER HEAD ASSEMBLY (TAPERED SPARK PLUG SEATS) (1 required per assembly)
ORD 8M0115134     O NLA  
936-5319 ORD 8M0115134 O NLA
(more info)
    UnavailableUnavailable Parts
#24 16-34521 STUD, VALVE ROCKER ARM (.013 O.S.) (AR required per assembly)
STUD              O NLA 16-34521
16-34521 STUD O NLA
(more info)
    UnavailableUnavailable Parts
#24 16-34522 STUD, VALVE ROCKER ARM (.003 O.S.) (AR required per assembly)
STUD 16-34522 16-34522
16-34522OEM Part 16-34522 - Stud (more info) About Mercury Marine $5.70 $5.70 Add to shopping cart
Available to order:
Usually ships
within 8 days
#25 19-34272 PLUG, EXPANSION - CYLINDER HEAD (15/16"DIA.) (2 required per assembly)
PLUG 19-34272  
19-34272OEM Part 19-34272 - Plug (more info) About Mercury Marine $19.08 $19.08 Add to shopping cart
10+ in stock. Explain stock levels
#26 10-34510 BOLT, CYLINDER HEAD TO CYLINDER BLOCK (10 required per assembly)
BOLT 10-34510 10-34510
10-34510OEM Part 10-34510 - Bolt (more info) About Mercury Marine $13.50 $13.50 Add to shopping cart
Available to order:
Usually ships
within 8 days
#27 27-34273 GASKET, CYLINDER HEAD TO CYLINDER BLOCK (1 required per assembly)
GASKET            O - Replaced by 27-34273  1 27-34273
27-34273This part has been superseded. GASKET O - Replaced by 27-34273 1
(more info)
    UnavailableUnavailable Parts
GASKET 27-34273  1 27-34273  1
27-34273 1OEM Part 27-34273 1 - Gasket (more info) About Mercury Marine $64.70 $55.40 Add to shopping cart
Available to order:
Usually ships
within 8 days
Head Gasket 18-3880
18-3880OEM Match 18-3880 - Head Gasket 27-34273 (more info)
Replaces OEM #0311210
About Sierra Marine $54.99 $44.36 Add to shopping cart
Available to order:
Usually ships
within 8 days
#28 34532 ROD, PUSH -VALVE (8 required per assembly)
PUSH ROD 34532 34532
34532OEM Part 34532 - Push Rod (more info) About Mercury Marine $7.80 $7.80 Add to shopping cart
10 in stock. Explain stock levels
#29 62421 VALVE,INLET (STANDARD STEM) (4 required per assembly)
VALVE,NLA 62421 62421
62421OEM Part 62421 - Valve, NLA (more info) About Mercury Marine $18.00 $18.00 Add to shopping cart
10+ in stock. Explain stock levels
#29 62422 VALVE, INLET (.015 O.S. STEM) (AR required per assembly)
VALVE,NLA 62422 62422
62422OEM Part 62422 - Valve, NLA (more info) About Mercury Marine $8.00 $8.00 Add to shopping cart
10+ in stock. Explain stock levels
#30 85803 VALVE, EXHAUST (STANDARD STEM) (4 required per assembly)
VALVE 85803 85803
85803OEM Part 85803 - Valve, NLA (more info) About Mercury Marine $14.58 $14.58 Add to shopping cart
Available to order:
Usually ships
within 8 days
#30 49076 VALVE, EXHAUST (.015 O.S. STEM) (AR required per assembly)
VALVE,NLA 49076 49076
49076OEM Part 49076 - Valve, NLA (more info) About Mercury Marine $15.00 $15.00 Add to shopping cart
7 in stock. Explain stock levels
#31 839-3548 CYLINDER BLOCK ASSEMBLY (SEE PAGE 18 FOR BREAKDOWN) (1 required per assembly)
ORD 87956A 1      O NLA  
839-3548 ORD 87956A 1 O NLA
(more info)
    UnavailableUnavailable Parts