Identify C.E. Smith 29551 & 29552 Rubber Bow Y-Stops
If an older boat trailer has a worn black rubber Y-stop at the winch post, the overall shape can make different sizes look interchangeable. C.E. Smith's 29551 and 29552 have different mounting-block sizes, arm spans and bolt openings. Check all three dimensions before replacing the original part.
Identify the original Y-stop by part number
| MPN | Mounting section | Arm span | Shaft opening | Material |
|---|---|---|---|---|
| 29551 | 3 × 3 in | 6⅝ in | ½ in | Black natural rubber |
| 29552 | 2 × 2 in | 4 in | ⅜ in | Black natural rubber |
The larger 29551 has a 3 × 3-inch mounting section, 6⅝-inch span and nominal ½-inch bolt opening. The smaller 29552 has a 2 × 2-inch mounting section, 4-inch span and nominal ⅜-inch opening. Both are black natural rubber, so color cannot distinguish them.
Measure three things: the stop's square mounting section, the full span across its Y-shaped arms, and the hole for the mounting bolt. The 3 × 3-inch and 2 × 2-inch sizes describe the mounting section—not the overall arm-to-arm width. Changing the stop size or bolt diameter can change its position on the winch post.
Replacement identification checklist
- Find any surviving part label. Check maintenance records or packaging for the complete manufacturer number.
- Measure the old mounting section. Remove the stop if necessary to check the portion seated between the bracket sides, not merely the outer rubber tips.
- Measure the Y opening. Compare the distance across the arms with the two published spans and the position against the bow.
- Check the bolt and mounting holes. A 29552 uses a smaller nominal shaft opening than a 29551. Confirm the bolt size and condition of the winch stand.
- Inspect the surrounding hardware. Replace broken or badly compressed rubber, but also examine loose fasteners, a bent bracket or a shifted winch post.
- Review the exact product listing. Both listed parts are single rubber stops. Check the current product condition, stock and whether additional hardware is required.
Compare the matching product photographs
Both records are listed as Brand New in UsedRVParts. Eligible viewing or local pickup in Kelowna is by appointment; consult the individual product listing for fulfillment details.
Related bow and trailer hardware
For a different shape of bow-contact part, see our roller and shaft identification. The bow stop cushions the boat against the winch stand, but it is not a towing restraint; our bow tie-down identification covers the separate tie-down hardware.
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