The Honda 13212-ZG8-003 Connecting Rod Bearing B (Black) is a genuine OEM replacement designed for GX640 horizontal shaft engines, H4518 lawn tractors, and H5518 multi-purpose tractors. As an authentic Honda part, it is manufactured to the same specifications as the original, ensuring a direct fit without modification. This bearing carries the Black color designation — confirm this variant matches your existing bearing before ordering, as Honda lists multiple bearing grades and colors for this application. Always cross-reference your unit's serial number against the fitment table to confirm part number 13212-ZG8-003 is correct for your specific build.
Key Features
- OEM Bearing Precision — genuine Honda manufacture means the bearing clearance and dimensions match the connecting rod and crankpin exactly, supporting proper oil film formation and load distribution at the big end.
- Color-Grade Identification — the Black designation identifies a specific bearing thickness grade; matching this grade to your engine's journal measurement is essential for correct running clearance.
- Broad Fitment — covers GX640 horizontal shaft engines, H4518 lawn tractors, and H5518 multi-purpose tractors; confirm fitment by checking your serial number against the compatibility table.
- Critical Wear Component — a worn or out-of-specification connecting rod bearing allows excess play at the big end, leading to knocking, accelerated crankshaft wear, and potential engine failure.
The connecting rod bearing at the big end sits between the connecting rod and the crankshaft journal, allowing the rod to rotate smoothly around the crankpin as the piston reciprocates. Honda grades these bearings by thickness — indicated by color — so that engine builders can select the correct clearance for their specific crankshaft and connecting rod dimensions. When this bearing wears beyond its service limit, oil pressure at the big end drops, the characteristic knocking noise appears under load, and uncorrected wear will ultimately damage the crankshaft journal and connecting rod bore.
Part Details
| Part Number | 13212-ZG8-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Connecting Rod Bearing B (Black) |
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.
