This genuine item is supplied directly from the original equipment manufacturer for use with Honda engines commonly installed on a variety of lawn and garden equipment. It is the main cover for the cylinder assembly. The part helps to protect the internal components from dust and other contaminants. If your cover is damaged or is missing, this will provide an identical replacement for the original component that was installed on a new unit. This high-quality head cover is made of durable metal and is sold individually. Note, the hardware to secure it is sold separately. You will need a wrench to perform this repair.
Troubleshooting
This part works with the following brands:
Honda
Briggs and Stratton
MTD
Toro
Cub Cadet
Craftsman
Jonsered
This part works with the following products:
Engine
Lawn Mower
Snow Blower
Generator
Pressure Washer
Part# 12310-Z8A-000 replaces these:
12310-Z0J-000
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Customer Part Reviews
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5.0
Average Rating (out of 5):
★★★★★
★★★★★
(8 Reviews)
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★★★★★
★★★★★
Quality and fit
Good quality and price delivered in timely manner.
James - May 27, 2019
Verified Purchase
★★★★★
★★★★★
Original Part
Ordered this part for my Honda engine pressure washer. Part arrived very quickly and fit perfectly. Installation was quick and easy.
Guest - July 15, 2019
Verified Purchase
★★★★★
★★★★★
Easy part and install
Ok original packing.
Guest - June 22, 2020
Verified Purchase
★★★★★
★★★★★
Arrived quickly, identical to original part, quick fix.
The parts arrived quickly and the quality was excellent. The head cover is not designed to use a pre-made gasket. This is true for the original part too.You will need to get a tube of “Permatex” and follow the directions on the tube. Be sure to use the high heat type. You put a line of permatex on the lip of the new head cover and let set per tube instructions. Works perfectly. Be sure to tighten the 4 screws evenly to insure the permatex is pressed down and seals evenly. Torque screws per instructions to insure the screws stay tight.
Charles - August 4, 2020
Verified Purchase
★★★★★
★★★★★
Easy repair
Was in great condition
Guest - November 18, 2020
Verified Purchase
★★★★★
★★★★★
Easy fix
Wasn’t sure why my lawnmower just died and wouldn’t restart. I didn’t realize that I dented the valve cover while mowing around a fire hydrant. Once I figured it out, I ordered a new one from ereplacementparts. Arrived fast and perfect condition as always. First place to check when you need a part.
Guest - April 30, 2022
Verified Purchase
★★★★★
★★★★★
Perfect Fit
The part was original part at a great price. Speedy delivery
Guest - July 5, 2022
Verified Purchase
★★★★★
★★★★★
Honda parts ordered.
Everything I ordered arrived on time and your website is easy to navigate.
Guest - March 13, 2023
Verified Purchase
Questions & Answers
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1. Unscrewed valve cover.
2. Used pliers to pull valve cover off which damaged.
3. Cleaned off all sealant from head portion that valve cover mounts on.
4. Put grey sealant on the new valve cover which was recommended by others. (There was no gasket.)
5. Installed new valve cover and hand tightened screws per instr
... Read moreuctions.
1. Prep engine for work. (drain oil, remove trim, remove from mow deck, etc)
2. Remove valve cover
3. Open crankcase
4. Remove flywheel with puller (try to mark locations on timing belt)
5. Remove crankshaft and piston (lose markings on timing belt)
6. Remove valve rockers and Springs then valves
7
... Read more. Order new parts and wait for them to come
8. Install new valves and Springs and rockers (using online diagrams for exact part locations)
9. Install new rings on piston.
10. Install piston using recently purchased ring compressor
11. Install crankshaft
12. Refer to Internet for timing (quite simple)
13. Reinstall flywheel
14. Put rest if motor back together as best I can.
15. Try to figure why choke isn\'t working like should, no luck
16. Put in oil and gasoline and celebrate when it fires up and runs.
1. Drained what left of the oil.
2. Removed the old cover.
3. Applied a gasket maker compound.
4. Placed my new cover on.
5. Hand tightened the bolts but not fully.
6. Allowed gasket compound to dry for a bit.
7. Came back and tightened all the way for a good seal.
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I somehow punched a small hole in the aluminum valve cover. So it was releasing minute oil smoke
Took the 4 bolts out an thought I could just remove the cover. Wrong... it is sealed with liquid gasket material. So you will likely bend and make useless the one you\'re removing. For me it was no problem as I was replacing it anyway. Be sure to note the instructions for the gasket material. Mine said do not use for 24 hours to allow a f
... Read moreull cure.
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Valve cover was bent preventing the valves from working
Removed 4 bolts on valve cover. It was glued on and was quite bent before I got it off! I checked the valve adjustment and put the new one on with fresh sealant. It was a perfect replacement part.
Removed the rocker arm cover.
Removed the rope starter assembly.
Move the flywheel to the magnets meet the magneto.
Move the cam sprocket so the timing marks line up.
Re-install the belt onto the cam sprocket.
Put the new rocker arm cover on. (Has a retainer to keep the belt from jumping.)
Re-install th
... Read moree rope starter assembly.
Log Splitter started on second pull.
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Model Cross Reference
This part works with the following models:
ERP Number: ERP11889486
Manufacturer Part Number: 12310-Z8A-000
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Mail-In Recycling Rebate
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
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(2009)_WW_7.gif "Part Location Diagram of 12310-Z8A-000 Honda Head Cover")
(2009)_WW_7.gif "Part Location Diagram of 12310-Z8A-000 Honda Head Cover")
