Honda 91307-425-003 O-Ring (21.5X3.2)

The Honda 91307-425-003 O-Ring (21.5X3.2) is a genuine OEM replacement seal designed for the H6522 compact tractor. As an authentic Honda part, it is manufactured to the exact dimensional tolerances required for a proper seal in the H6522. Because Honda lists this O-Ring under part number 91307-425-003 with a 21.5X3.2 sizing designation, buyers should confirm this size matches their specific unit before ordering, as variant sizes exist across the H6522 model range.

Key Features

• Genuine OEM Seal Integrity — manufactured to Honda's exact cross-section and inner-diameter dimensions, ensuring the sealing surface performs as the original design intends
• Exact Dimensional Spec — the 21.5X3.2 sizing is specific to this part; verify this measurement against your unit before installation, as alternate O-ring sizes are catalogued for the H6522
• Direct OEM Replacement — sourced directly from Honda's parts catalogue for the H6522 compact tractor, with no modification needed to fit the original sealing groove
• Serial Number Verification Recommended — Honda supersedes parts at production breaks, so cross-check your tractor's serial number against the fitment table to confirm part number 91307-425-003 is correct for your machine

An O-ring is a simple but critical loop-shaped seal that sits in a machined groove and prevents fluid or air from escaping past a joint or fitting. In a compact tractor like the H6522, O-rings are used throughout hydraulic, cooling, and fluid-circuit connections to maintain pressure and prevent leaks. When an O-ring hardens, cracks, or is compressed beyond its service life, it allows fluid to bypass the seal — resulting in leaks, pressure loss, or contamination of surrounding components. Replacing a worn O-ring with the correct genuine Honda part restores the original sealing performance and protects the surrounding system.

Part Details

Compatibility & Fitment

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.