Mercury Marine 90 HP (4-STROKE) Cylinder Head Parts
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Parts for Mercury Marine 90 HP (4-STROKE) Cylinder Head

Revise Search: Start Over > Different Engine Model > Different Serial Number Range > Different Component
YOU ARE HERE: MERCURY > 90 HP (4-STROKE) > 0G960500 THRU 0T800999 (USA) > Cylinder Head

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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 ]

Engine Diagram

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 ]

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1
804109T 4 CYLINDER HEAD (1 required per assembly)
(Use PN 804127-1 Thermostat Cover and PN 855676-1 Thermostat to service this Cylinder Head)
HEAD ASY-CYLINDER O - Replaced by -8M0057170  
804109T 4This part has been superseded. HEAD ASY-CYLINDER O - Replaced by -8M0057170
    UnavailableUnavailable Parts
HEAD ASY-CYLINDER 8M0057170  
8M0057170OEM Part 8M0057170 - Cylinder Head Assembly (more info) About Mercury Marine $1,850.71 $1,850.71 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#2
17-804110 PIN, Guide (16 required per assembly)
GUIDE,NLA 17-804110  
17-804110OEM Part 17-804110 - Guide, NLA (more info) About Mercury Marine $16.00 $16.00 Add to shopping cart
10+ in stock. Explain stock levels
#3
19-804111 PLUG (4 required per assembly)
PLUG,NLA 19-804111  
19-804111OEM Part 19-804111 - Plug, NLA (more info) About Mercury Marine $3.00 $3.00 Add to shopping cart
10+ in stock. Explain stock levels
#4
10-804112 BOLT, (M7 x 48) (4 required per assembly)
BOLT 10-804112 Larger photo - 10-804112
10-804112OEM Part 10-804112 - Bolt (more info) About Mercury Marine $0.90 $0.90 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#5
17-804113 PIN, Dowel (4 required per assembly)
PIN-DOWEL 17-804113  
17-804113OEM Part 17-804113 - Pin -Dowel (more info) About Mercury Marine $2.00 $2.00 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#6
10-804114 BOLT, (M7 x 37) (16 required per assembly)
BOLT 10-804114 Larger photo - 10-804114
10-804114OEM Part 10-804114 - Bolt (more info) About Mercury Marine $1.90 $1.90 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#7
10-825501 BOLT, (M6 x 25) (2 required per assembly)
BOLT              O - Replaced by 10-824832  6  
10-825501This part has been superseded. BOLT O - Replaced by 10-824832 6
    UnavailableUnavailable Parts
SCREW 10-824832  6 Larger photo - 10-824832  6
10-824832 6OEM Part 10-824832 6 - Screw (more info) About Mercury Marine $1.00 $1.00 Add to shopping cart
2 in stock. Explain stock levels
#8
804127 THERMOSTAT COVER (1 required per assembly)
(Use with 804109T2 Cylinder Head Only) SN# 0T178499 & Below
COVER 804127 Larger photo - 804127
804127OEM Part 804127 - Cover (more info) About Mercury Marine $8.94 $8.94 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#8
804127 1 THERMOSTAT COVER (1 required per assembly)
(Use with 804109T4 Cylinder Head) SN# 0T178500 & Up
COVER 804127  1 Larger photo - 804127  1
804127 1OEM Part 804127 1 - Cover (more info) About Mercury Marine $10.73 $10.73 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#9
855676 THERMOSTAT, (60C/140F) (1 required per assembly)
(Use with 804109T2 Cylinder Head Only) SN# 0T178499 & Below
THERMOSTAT        O - Replaced by -855676003  
855676This part has been superseded. THERMOSTAT O - Replaced by -855676003
    UnavailableUnavailable Parts
ORD 855676A 1     O NLA Larger photo - 855676003
855676003 ORD 855676A 1 O NLA
    UnavailableUnavailable Parts
#9
855676 1 THERMOSTAT, 60°C (140°F) (1 required per assembly)
(Use with 804109T4 Cylinder Head) SN# 0T178500 & Up
THERMOSTAT 855676  1 Larger photo - 855676  1
855676 1OEM Part 855676 1 - Thermostat (more info) About Mercury Marine $53.58 $50.23 Add to shopping cart
1 in stock. Explain stock levels
#10
10-881311 BOLT, (M10 x 145) (10 required per assembly)
BOLT 10-881311 Larger photo - 10-881311
10-881311OEM Part 10-881311 - Bolt (more info) About Mercury Marine $12.57 $12.57 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#11
33-859495 SPARK PLUG, (NGK-LFR5A-11) (4 required per assembly)
PG LFR5A-11 @10   O - Replaced by 33-859495Q Larger photo - 33-859495
33-859495This part has been superseded. PG LFR5A-11 @10 O - Replaced by 33-859495Q
Spark Plug Champion - LFR5A-11
    UnavailableUnavailable Parts
PG LFR5A-11 Note: must be ordered in multiples of 10 33-859495Q Larger photo - 33-859495Q
33-859495QOEM Part 33-859495Q - Pg LFR5A-11 - Priced individually (more info) About Mercury Marine $11.25 $11.25 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#12
10-827207 BOLT, (M8 x 25) (4 required per assembly)
BOLT 10-827207 Larger photo - 10-827207
10-827207OEM Part 10-827207 - Bolt (more info) About Mercury Marine $2.30 $2.30 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#13
10-852474 1 BOLT, (M6 x 20) (2 required per assembly)
BOLT 10-852474  1 Larger photo - 10-852474  1
10-852474 1OEM Part 10-852474 1 - Bolt (more info) About Mercury Marine $1.20 $1.20 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#14
804085 COVER (2 required per assembly)
ORD 804085A01     O NLA  
804085 ORD 804085A01 O NLA
    UnavailableUnavailable Parts
#15
25-804086 GROMMET (2 required per assembly)
GROMMET 25-804086  
25-804086OEM Part 25-804086 - Grommet (more info) About Mercury Marine $4.79 $4.79 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#16
804079 ANODE (2 required per assembly)
ANODE             O - Replaced by -804079001  
804079This part has been superseded. ANODE O - Replaced by -804079001
    UnavailableUnavailable Parts
ORD 887847A01     O NLA Larger photo - 804079001
804079001 ORD 887847A01 O NLA
    UnavailableUnavailable Parts
#17
23-804116 COLLAR (2 required per assembly)
COLLAR 23-804116  
23-804116OEM Part 23-804116 - Collar (more info) About Mercury Marine $1.60 $1.60 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#18
27-804115 1 GASKET (1 required per assembly)
GASKET 27-804115  1 Larger photo - 27-804115  1
27-804115 1OEM Part 27-804115 1 - Gasket (more info) About Mercury Marine $112.16 $105.12 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#19
10-831247 14 BOLT (4 required per assembly)
SCREW 10-831247 14 Larger photo - 10-831247 14
10-831247 14OEM Part 10-831247 14 - Screw (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#20
12-831246 WASHER, Sealing (4 required per assembly)
WASHER 12-831246  
12-831246OEM Part 12-831246 - Washer (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#21
10-881312 BOLT, (M8 x 55) (5 required per assembly)
BOLT 10-881312 Larger photo - 10-881312
10-881312OEM Part 10-881312 - Bolt (more info) About Mercury Marine $2.90 $2.90 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#22
27-804123 GASKET (1 required per assembly)
GASKET 27-804123  
27-804123OEM Part 27-804123 - Gasket (more info) About Mercury Marine $53.89 $42.10 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#23
804118T 2 COVER KIT (1 required per assembly)
SN# 0T408999 & Below
COVER 804118T 2  
804118T 2OEM Part 804118T 2 - Cover (more info) About Mercury Marine $179.69 $168.40 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#23
881313T 1 COVER KIT (1 required per assembly)
SN# 0T409000 & Up
COVER 881313T 1  
881313T 1OEM Part 881313T 1 - Cover (more info) About Mercury Marine $223.25 $209.21 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#24
804119 COVER, Breather (1 required per assembly)
COVER 804119 Larger photo - 804119
804119OEM Part 804119 - Cover (more info) About Mercury Marine $9.57 $9.57 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#25
10-804120 SCREW, (M4 x 8) (8 required per assembly)
SCREW 10-804120 Larger photo - 10-804120
10-804120OEM Part 10-804120 - Screw (more info) About Mercury Marine $0.90 $0.90 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#26
22-804122 NIPPLE (1 required per assembly)
SN# 0T178499 & Below
NIPPLE,NLA 22-804122  
22-804122- Nipple, NLAOEM Part 22-804122- Nipple, NLA (more info) About Mercury Marine $22.50 $22.50 Add to shopping cart
10+ in stock. Explain stock levels
#27
10-858530 BOLT, (M6 x 30) (14 required per assembly)
BOLT 10-858530 Larger photo - 10-858530
10-858530OEM Part 10-858530 - Bolt (more info) About Mercury Marine $0.70 $0.70 Add to shopping cart
1 in stock. Explain stock levels
#28
859578A 1 PLUG ASSEMBLY, Oil (1 required per assembly)
PLUG ASSY-OIL 859578A 1 Larger photo - 859578A 1
859578A 1OEM Part 859578A 1 - Plug Assembly - Oil (more info) About Mercury Marine $4.20 $4.20 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#29
NSS NOT SOLD SEPARATE, O-Ring (1 required per assembly)
#30
25-855690 GROMMET (2 required per assembly)
GROMMET 25-855690  
25-855690OEM Part 25-855690 - Grommet (more info) About Mercury Marine $1.30 $1.30 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#31
858752 COVER (1 required per assembly)
COVER             O - Replaced by -858752001  
858752This part has been superseded. COVER O - Replaced by -858752001
    UnavailableUnavailable Parts
COVER 858752001 Larger photo - 858752001
858752001OEM Part 858752001 - Cover (more info) About Mercury Marine $20.41 $19.14 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#32
10-19937 16 SCREW, (M6 x 16) (5 required per assembly)
SCREW 10-19937 16 Larger photo - 10-19937 16
10-19937 16OEM Part 10-19937 16 - Screw (more info) About Mercury Marine $1.60 $1.60 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#-
804109T 3 CYLINDER HEAD ASSEMBLY (1 required per assembly)
HEAD ASY-CYLINDER O - Replaced by -804109T07  
804109T 3This part has been superseded. HEAD ASY-CYLINDER O - Replaced by -804109T07
    UnavailableUnavailable Parts
CYLINDER HEAD     O - Replaced by -804109T08  
804109T07This part has been superseded. CYLINDER HEAD O - Replaced by -804109T08
    UnavailableUnavailable Parts
HEAD-CYLINDER 804109T08  
804109T08OEM Part 804109T08 - Head - Cylinder (more info) About Mercury Marine $4,998.06 $4,998.06 Add to shopping cart
Available to order:
Usually ships
in 5-7 days
#-
27-804345A02 GASKET SET, Powerhead (1 required per assembly)
GASKET SET 27-804345A02  
27-804345A02OEM Part 27-804345A02 - Gasket Set (more info) About Mercury Marine $320.42 $300.30 Add to shopping cart
Available to order:
Usually ships
in 5-7 days

Revise Search: Start Over > Different Engine Model > Different Serial Number Range > Different Component
YOU ARE HERE: MERCURY > 90 HP (4-STROKE) > 0G960500 THRU 0T800999 (USA) > Cylinder Head

« Previous | Next »

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