The Honda 13215-ZG8-003 Connecting Rod Bearing E (Yellow) is a genuine OEM component designed for GX640 horizontal shaft engines, H4518 lawn tractors, and H5518 multi-purpose tractors. As a direct Honda OEM part, it is manufactured to the same specifications as the original bearing and is the correct replacement when servicing the lower end of these engines. The Yellow color code identifies the bearing's size class — confirm this matches your engine's crankpin grade before ordering, as Honda uses color-coded bearing sets to achieve proper running clearance at assembly.
Key Features
- Color-Coded Size Class — the Yellow designation identifies a specific bearing grade; matching this code to your engine's crankpin specification is essential for correct oil film clearance and crankshaft longevity
- Genuine OEM Construction — manufactured by Honda to original tolerances, ensuring the bearing seats correctly in the connecting rod and delivers the running clearance the engine was designed around
- Broad Fitment — covers GX640 horizontal shaft engines as well as H4518 lawn tractors and H5518 multi-purpose tractors; verify your unit's serial number against the fitment table to confirm applicability
- Lower-End Reliability — a worn or out-of-spec connecting rod bearing causes rod knock, accelerated crankshaft wear, and eventual engine failure; replacing it with the correct grade restores proper oil clearance and protects the bottom end
The connecting rod bearing sits between the connecting rod's big end and the crankshaft journal, forming the precision interface that transfers combustion forces from the piston into the rotating crankshaft. A thin film of pressurized oil separates the bearing surface from the journal during operation; if that clearance is too tight or too loose — because the wrong grade was fitted or the bearing has worn — oil film breaks down, metal-to-metal contact follows, and rod knock or catastrophic lower-end damage results. Honda color-codes these bearings (Yellow, Red, Brown, and so on) to allow builders and technicians to select the grade that achieves the correct clearance for a given crankpin and rod bore combination, so matching the Yellow designation to your engine's specifications is as important as the replacement itself.
Part Details
| Part Number | 13215-ZG8-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Connecting Rod Bearing E (Yellow) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX640 | All |
| Lawn Tractor | H4518 | All |
| Multi-Purpose Tractor | H5518 | All |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
