Identify CURT 48600, 48601 & 48660 Lunette Rings
Trying to identify a forged lunette ring from a trailer? Three CURT models share a 3-inch inside opening and a two-bolt channel mounting pattern, so the original part number and finish help distinguish them. The 48610 is the separate three-position channel, not a fourth ring.
Identify CURT standard channel lunette rings
| CURT MPN | Component | Eye diameter | Manufacturer GTW rating | Finish |
|---|---|---|---|---|
| 48600 | Ring only | 3 in | 12,000 lb | Raw steel |
| 48601 | Ring only | 3 in | 12,000 lb | Gloss-black powder coat |
| 48660 | Ring only | 3 in | 24,000 lb | Raw steel |
| 48610 | Channel only | Not an eye | 12,000 lb | Gloss-black powder coat |
48600 is the raw, 12,000 lb-rated forged ring. 48601 has a gloss-black powder-coated finish and the same 12,000 lb ring rating. 48660 is another raw forged ring, but is rated to 24,000 lb as an individual component. All three have 3-inch inside eyes and 2-inch bolt spreads, so visual similarity alone does not identify the rating.
Recognize the 48610 channel
CURT 48610 has a black one-piece steel channel, three adjustment positions, a 3-inch inside width and a 7½-inch overall height. It receives one of the compatible separate rings at the selected position. Its own 12,000 lb gross trailer rating remains applicable even when a higher-rated ring is used.
Do not combine ratings by addition or substitution. CURT 48660 has a 24,000 lb ring rating, but channel 48610 is rated to 12,000 lb GTW. An assembly using both is limited to no more than 12,000 lb GTW, and may be limited further by its fasteners, trailer, pintle hook or tow vehicle. Always check the separately applicable mounting and towing ratings.
Replacement identification checklist
- Look for a stamped capacity or original MPN. Keep the complete manufacturer number. The 48600 and 48660 are both raw steel, but have different ratings.
- Measure the ring opening. These three standard models use a 3-inch inside eye. Confirm the original pintle hook and ring are an approved pair.
- Compare mounting holes. The standard rings have 2-inch mounting-bolt spacing for a suitable CURT channel. Inspect wear, cracks and stretched holes.
- Check the channel separately. The 48610 has three adjustment positions and a 3-inch inside width; it is not the same as a SecureLatch channel used by model 48626.
- Identify the fastening hardware. The rings do not include a mounting channel or bolts. Do not substitute an unknown bolt set; use the manufacturer's specified kit and instructions.
- Check load limits. A 24,000 lb ring installed on the 48610 channel remains subject to that channel's 12,000 lb rating and any lower-rated towing component.
Compare matching product photos and listings
These four UsedRVParts records are categorized as Brand New. Open each exact MPN for its current availability and supplied parts. Eligible viewing or pickup in Kelowna is by appointment.
CURT 48660
Higher-rated raw forged lunette ring
3-in eye; 24,000 lb ring rating
Check matching listing
CURT 48610
Three-position adjustable channel
3-position adjustable channel; 12,000 lb rated
Check matching listingRelated trailer mounting reference
If the original trailer connection was a hitch-ball coupler instead of a lunette ring, see our CURT channel ball-coupler identification. A ball coupler and a lunette eye are different connection systems.
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