Homelite JA458451 TBO Ring – Genuine OEM Replacement Equipment Ring
Part Number: JA458451
Category: Walk-Behind Lawn Mower Drive & Transmission Parts
Type: Eaton Ring / Retaining Ring – Genuine OEM Replacement Equipment Ring
The Homelite JA458451 TBO Ring is a genuine OEM replacement retaining component used on select Homelite walk-behind lawn mowers. While some Homelite catalogs identify the component simply as “Ring TBO,” detailed mower parts diagrams identify JA458451 more specifically as an “Eaton Ring.”
Product Specifications
- Part Number: JA458451
- Manufacturer: Homelite
- Product Type: Retaining Ring / Eaton Ring
- OEM Description: Ring TBO
- Alternate Description: Ring – Eaton
- Function: Retains Applicable Components Within the Mower Drive Assembly
- System: Rear Wheel / Drive / Transmission Assembly
- Application: Walk-Behind Lawn Mower
- Compatible Brand: Homelite
- OEM Status: Genuine Homelite OEM Part
- Condition: New
- Quantity: 1 Ring
OEM suppliers continue to identify JA458451 under the original Homelite description “RING TBO.”
Features & Benefits
- Genuine Homelite OEM replacement component
- Factory part number JA458451
- Cataloged as Ring TBO
- Also identified as an Eaton Ring
- Used within compatible mower drive assemblies
- Helps retain associated drive and transmission components
- Compact metal retaining-ring construction
- Maintains the mower's original factory assembly configuration
- Suitable for restoration and repair of older Homelite walk-behind mowers
- Ideal replacement for bent, stretched, distorted, corroded, damaged, or missing rings
- Direct replacement for equipment specifically requiring JA458451
Applications
Confirmed applications include select:
- Homelite HM20 Walk-Behind Mowers
- Homelite HM20 UT-30139-A
- Homelite HM20 UT-30156-A
- Homelite HMB21P4 Walk-Behind Mowers
- Homelite HMB21P4I UT-30528-B
- Homelite HMB21P5I UT-30529-B
- Homelite HSB21P5 UT-30155
- Homelite HSB21P42 UT-30145
- Homelite HSD20P5 series
- Select Homelite self-propelled walk-behind mowers
- Rear wheel and drive assemblies
- Transmission-related retaining applications
- OEM replacement applications requiring JA458451
For example, the Homelite HM20 UT-30139-A parts breakdown lists JA458451 as Ring – Eaton within the mower's drive components. The HMB21P4I UT-30528-B and HMB21P5I UT-30529-B diagrams also identify JA458451 as an Eaton Ring.
Important Notes
- Verify compatibility with your specific mower model and UT number before ordering.
- Homelite OEM suppliers identify JA458451 specifically as “RING TBO.”
- Detailed mower diagrams identify the same JA458451 component as “Ring – Eaton.”
- The Homelite HMB21P4I UT-30528-B lists JA458451 as item D54 within its mower assembly.
- The Homelite HM20 UT-30139-A lists JA458451 as item B40, Ring – Eaton, near the transmission, washers, extension spring, and traction-drive components.
- The HSB21P42 UT-30145 also uses JA458451 within its mower drive assembly.
- JA458451 is a legacy Homelite component. Availability varies considerably: some suppliers still show remaining or special-order inventory, while Sears PartsDirect reports that the manufacturer no longer supplies the part and lists no manufacturer substitute.
- This listing is for one JA458451 TBO Ring only unless otherwise specified. Washers, drive wheels, pinions, springs, belts, transmission components, axles, and other mower hardware are sold separately.
- Inspect the surrounding washers, retaining grooves, drive components, axle hardware, and transmission assembly when replacing the ring.
- Match part number JA458451 with your mower's illustrated parts diagram before ordering to ensure proper fitment.
