How to Select a Trailer Hitch
Keep vehicle hitch class and coupler hardware in the same honest conversation before you tow.
Watch on YouTubeTrailer Coupler Latch Pin Tips (Canada)
The pin on the coupler handle is not the same pin that holds a ball mount in the receiver. On most latch-style trailer couplers, a secondary latch pin or clip keeps the coupler handle locked down on the ball after you seat the coupler. The hitch pin (or hitch lock) lives at the vehicle receiver and secures whatever you shove into the tube. Mix those two up on a busy Canadian launch ramp and you either leave the coupler half-latched or forget to pin the mount. This page keeps the jobs separate, points at live CURT hardware we stock for each job, and links the checklists you should already be using before the first tow.
Built for Canadian trailers and tow vehicles. Free shipping on CURT towing gear from Lots of Parts when the SKU is live on this store.
Pair this page with the
coupler latch checklist,
hitch pin lanyard and clip tips, and
first tow day checklist.
Prefer the full index?
Open the towing guides hub.
Watch these CURT videos first
All four videos are from the official CURT YouTube channel (@curtmfg). Use them for hitch class basics, install habits, wiring checks, and ball-mount height. None of them replace a coupler walk-around, but they keep the vehicle side honest while you sort the trailer latch.
If an embed does not load, use the YouTube link under the card.
Trailer Hitch Installation Techniques
A solid hitch install still needs a coupler that latches and pins after the ball is seated.
Watch on YouTubeHow to Connect a Trailer Wiring Harness
Lights come after the coupler is locked and pinned. Do not skip the latch walk-around for a plug check.
Watch on YouTubeHow to Choose a Ball Mount and Trailer Ball
Ball size must match the coupler. The latch pin only helps after the right ball is fully seated.
Watch on YouTubeTwo pins, two jobs
Trailer side
Coupler latch pin or clip
After the coupler socket drops onto the ball and the handle closes, a secondary pin or clip through the latch keeps the handle from bouncing open. Many posi-lock style latches include holes sized for a safety pin or a small coupler lock.
- Job: keep the coupler handle locked down
- Lives on the trailer tongue coupler
- Not a substitute for safety chains
Vehicle side
Hitch pin at the receiver
The hitch pin (or hitch lock) goes through the receiver and the shank of a ball mount, bike rack, or cargo carrier. CURT 21510 is our everyday five-eighths hitch pin with clip for two inch receivers. That pin does not latch your coupler.
- Job: keep inserts in the receiver tube
- Lives at the tow-vehicle hitch
- Clip or lanyard keeps the pin from walking out
Parts-counter habit
Say the names out loud
When a shopper asks for a hitch pin, ask whether they mean the receiver pin or the coupler latch pin. One sentence saves a wrong SKU and a wasted trip.
- Receiver talk points at 21510 or a hitch lock
- Coupler talk points at the latch checklist and latch hardware
- Both still need chains and lights
Coupler latch walk-around that actually sticks
Step 1Seat the ball
Match ball size to the coupler. Lower the coupler fully onto the ball before you fight the handle.
Step 2Close the latch
Close the coupler handle until it seats. If it will not close, the ball is wrong or the coupler is not down.
Step 3Pin or lock the latch
Install the secondary latch pin, clip, or coupler lock through the latch holes. Do not skip this because the handle felt snug.
Step 4Finish the tongue
Raise the jack, cross the safety chains, plug in lights, then walk the full first-tow checklist.
For a print-friendly latch sequence, open the coupler latch checklist. This tips page is the naming and hardware companion, not a replacement for that walk-around.
Live CURT hardware that supports each job
We stock coupler latch parts and receiver pins as separate shelves. Confirm ball size, channel width, and receiver size on the live card before you order.
Coupler latchCURT 25194Replacement two inch Posi-Lock coupler latch with holes for a safety pin or coupler lock. Confirm channel width on the live card.
Coupler latchCURT 25094Replacement one and seven-eighths inch Posi-Lock coupler latch for smaller balls. Same latch-pin holes mindset.
Coupler lockCURT 23520Barbell-style coupler lock for latch-type couplers with about a seven-eighths inch latch span on the live card.
Receiver pinCURT 21510Five-eighths hitch pin with clip for two inch receivers. This is the vehicle-side pin, not the coupler latch pin.
A coupler lock can serve as the secondary security through the latch holes on many latch-style couplers. A receiver hitch pin still belongs at the vehicle. Keep both jobs filled.
| Topic | What we tell shoppers |
|---|---|
| Naming | Coupler latch pin keeps the trailer handle down. Hitch pin keeps the mount in the receiver. Say which one you mean. |
| Ball match | Wrong ball size means the latch never closes honestly. See match trailer coupler to ball. |
| Latch checklist | Use the coupler latch checklist every hitch-up, not only the first time. |
| Receiver habits | Keep the clip on a lanyard and know when a lock replaces a plain pin. See hitch pin lanyard tips and lock versus pin. |
| Legal honesty | We do not invent Canadian legal cutoffs on this page. Follow your provincial rules, the trailer maker, and the live product ratings. |
Related guides worth opening next
Coupler latch checklistPrint-friendly walk-around for the trailer tongue.
Hitch pin lanyard tipsReceiver-side pin and clip habits that keep inserts home.
First tow checklistLights, chains, coupler, and tire pressure before you roll.
Coupler lock tipsWhen a lock at the latch is the secondary security you want.
Parts-counter summary: treat the coupler latch pin or clip as trailer-side security after the handle closes, treat the hitch pin as vehicle-side security for the receiver, stock live CURT latch and pin hardware for each job, and finish every hitch-up with chains, jack up, and lights. Free shipping on live CURT towing gear from Lots of Parts across Canada when the SKU shows available on this store.
