Hard
More than 2 hours
This is an OEM part sourced directly from the manufacturer. The head cover gasket is commonly found in Honda small engines. This part is made of flexible plastic, and is used to seal the connection between the head cover and the cylinder assembly. You will require a wrench when replacing this item. The head cover gasket is available as an individual replacement part.
Gasket- Head Cover 12312-ZM3-020
OEM part for: Honda
Part Number: 12312-ZM3-020
$3.99
In Stock
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Frequently Purchased Together ?
Compatibility
This part will fit the following 52 machines
Honda
GX31 (Type SA)(VIN# GCAG-1000001-2099999) Small Engine View Diagrams & Manuals
GX31 (Type SA2)(VIN# GCAG-1000001-2099999) Small Engine View Diagrams & Manuals
GX31 (Type SA2/A)(VIN# GCAG-2100001-9999999) Small Engine View Diagrams & Manuals
GX31 (Type SA5)(VIN# GCAG-1000001-2099999) Small Engine View Diagrams & Manuals
GX31 (Type SCMS/A)(VIN# GCAG-2100001-9999999) Small Engine View Diagrams & Manuals
GX31 (Type STW2)(VIN# GCAG-1000001-2099999) Small Engine View Diagrams & Manuals
GX31 (Type SAT)(VIN# GCAG-1000001-2099999) Small Engine View Diagrams & Manuals
GX31 (Type STW2/A)(VIN# GCAG-2100001-9999999) Small Engine View Diagrams & Manuals
GX31 (Type SAT/A)(VIN# GCAG-2100001-9999999) Small Engine View Diagrams & Manuals
GX31 (Type TA2)(VIN# GCAG-1000001-2099999) Small Engine View Diagrams & Manuals
GX31 (Type SAT5)(VIN# GCAG-1000001-2099999) Small Engine View Diagrams & Manuals
GX31 (Type TA2/A)(VIN# GCAG-2100001-9999999) Small Engine View Diagrams & Manuals
GX31 (Type SCMS)(VIN# GCAG-1000001-2099999) Small Engine View Diagrams & Manuals
GX31 (Type TAP)(VIN# GCAG-1000001-2099999) Small Engine View Diagrams & Manuals
GX31 (Type TAP/A)(VIN# GCAG-2100001-9999999) Small Engine View Diagrams & Manuals
GX22 (Type SAT)(VIN# GCAF-1000001-1399999) Small Engine View Diagrams & Manuals
GX22 (Type SAT/A)(VIN# GCAF-1400001-9999999) Small Engine View Diagrams & Manuals
GX22 (Type SAT5)(VIN# GCAF-1000001-1399999) Small Engine View Diagrams & Manuals
GX22 (Type TA)(VIN# GCAF-1000001-1399999) Small Engine View Diagrams & Manuals
GX22 (Type TA2)(VIN# GCAF-1000001-1399999) Small Engine View Diagrams & Manuals
GX22 (Type TA2/A)(VIN# GCAF-1400001-9999999) Small Engine View Diagrams & Manuals
GX22 (Type SA)(VIN# GCAF-1000001-1399999) Small Engine View Diagrams & Manuals
GX22 (Type SA2)(VIN# GCAF-1000001-1399999) Small Engine View Diagrams & Manuals
GX22 (Type SA2/A)(VIN# GCAF-1400001-9999999) Small Engine View Diagrams & Manuals
GX22 (Type SA5)(VIN# GCAF-1000001-1399999) Small Engine View Diagrams & Manuals
FG100 (Type A)(VIN# FZCV-6000001 to FZCV-9999999) Rototiller View Diagrams & Manuals
FG100 (Type A1)(VIN# FZCV-6000001 to FZCV-9999999) Rototiller View Diagrams & Manuals
FG100 (Type A1/A)(VIN# FZCV-6000001 to FZCV-9999999) Rototiller View Diagrams & Manuals
HHE31C (Type A)(VIN# MABA-1000001 TO MABA-9999999) Stick Edger View Diagrams & Manuals
HHE31C (Type A/A)(VIN# MABA-1000001 TO MABA-9999999) Stick Edger View Diagrams & Manuals
HHT31S (Type LTA)(VIN# HADA-1000001 to HADA-9999999) Trimmer/Brush Cutter View Diagrams & Manuals
HHT31S (Type LTA/A)(VIN# HADA-1000001 to HADA-9999999) Trimmer/Brush Cutter View Diagrams & Manuals
HHT31S (Type UNBA)(VIN# HABA-1000001 to HABA-9999999) Trimmer/Brush Cutter View Diagrams & Manuals
HHT31S (Type UNBA/A)(VIN# HABA-1000001 to HABA-9999999) Trimmer/Brush Cutter View Diagrams & Manuals
UMK422 (LNA) Trimmer/Brush Cutter View Diagrams & Manuals
UMK422 (Type LNA)(VIN# GCAF-1000001-9999999) Trimmer / Brushcutter View Diagrams & Manuals
UMK422 (Type LTA)(VIN# GCAF-1000001-9999999) Trimmer / Brushcutter View Diagrams & Manuals
UMK422K1 (Type LNA)(VIN# GCAF-1000001-1399999) Trimmer / Brushcutter View Diagrams & Manuals
UMK422K1 (Type LTA)(VIN# GCAF-1000001-1399999) Trimmer / Brushcutter View Diagrams & Manuals
UMK431 (Type LNA)(VIN# GCAG-1000001-9999999) Trimmer / Brushcutter View Diagrams & Manuals
UMK431 (Type LTA)(VIN# GCAG-1000001-9999999) Trimmer / Brushcutter View Diagrams & Manuals
UMK431 (Type UNBA)(VIN# GCAG-1000001-9999999) Trimmer / Brushcutter View Diagrams & Manuals
UMK431K1 (Type LNA)(VIN# GCAG-1000001-2099999) Trimmer / Brushcutter View Diagrams & Manuals
UMK431K1 (Type LNA/A)(VIN# GCAG-2100001-9999999) Trimmer / Brushcutter View Diagrams & Manuals
UMK431K1 (Type LTA)(VIN# GCAG-1000001-2099999) Trimmer / Brushcutter View Diagrams & Manuals
UMK431K1 (Type LTA/A)(VIN# GCAG-2100001-9999999) Trimmer / Brushcutter View Diagrams & Manuals
UMK431K1 (Type UNBA)(VIN# GCAG-1000001-2099999) Trimmer / Brushcutter View Diagrams & Manuals
UMK431K1 (Type UNBA/A)(VIN# GCAG-2100001-9999999) Trimmer / Brushcutter View Diagrams & Manuals
WX10 (Type A1)(VIN# GCAG-1000001-2099999) Water Pump View Diagrams & Manuals
WX10 (Type A2)(VIN# GCAG-1000001-2099999) Water Pump View Diagrams & Manuals
WX10 (Type A4)(VIN# GCAG-1000001-2099999) Water Pump View Diagrams & Manuals
WX10 (Type A4/A)(VIN# GCAG-2100001-9999999) Water Pump View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Engine Parts
- Edger Parts
- Trimmer Parts
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Honda engine started burning oil and metal dust in oil.
Tim - May 7, 2022
Tool Type
Engine
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Socket set, Wrench Set
1.Disassemble the Honda GX31 engine.
2. Identify worn parts
3. Hone cylinder bore.
4. Replaced piston, rings, piston pin.
5. Replaced oil seals
6. Reassembled engine.
7. Allowed rtv sealant to cure for 24 hours that sealed engine block.
8. Added engine oil and started engine.
2. Identify worn parts
3. Hone cylinder bore.
4. Replaced piston, rings, piston pin.
5. Replaced oil seals
6. Reassembled engine.
7. Allowed rtv sealant to cure for 24 hours that sealed engine block.
8. Added engine oil and started engine.
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Camshaft had teeth broken off
Jerald - July 6, 2020
Tool Type
Engine
Difficulty
Hard
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Socket set, Adjustable Wrench
How to take engine apart and replace camshaft.
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Thanks for voting and helping fellow customers!
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
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