Adjustable 3″ Channel Trailer Coupler – 6-Hole Hitch Mount
Heavy-duty adjustable trailer coupler mount with an extended 6-hole channel for extra vertical adjustment — ideal for Bulldog-style couplers, lunette eyes, or clevis hitch setups.
Key Measurements & Specs
| Specification | Detail |
|---|---|
| Part Number / SKU | 8978XL |
| Product Type | Adjustable coupler channel mount / extended hitch mount bracket |
| Channel Width | 3″ inside channel width |
| Hole Pattern | 6 holes / 2″ on center |
| Pin / Bolt Diameter | Compatible with ¾″ diameter pins or Grade-8 bolts |
| Material / Construction | Forged and welded heavy-gauge steel construction |
| Finish | Black powder-coated finish |
| Mount Style | Weld-on or bolt-on adjustable channel |
| Quantity Included | Not specified |
Fitment / Application
| Category | Details |
|---|---|
| Trailer / System | Adjustable trailer coupler setups |
| Primary Fit | Fits 3″ adjustable couplers and standard channel hardware |
| Compatible Coupler Styles | Bulldog-style couplers, lunette eyes, clevis couplers, and adjustable couplers |
| Common Uses | Hitches, farm trailers, construction trailers, heavy-duty utility trailers, agricultural trailers, and industrial trailers |
| Fitment Method | Verify trailer and hitch load ratings before use |
Top Features
| Feature | Buyer Benefit |
|---|---|
| Extended 6-Hole Channel | Provides extra vertical adjustment for coupler height setup |
| 3″ Inside Channel Width | Fits most adjustable trailer couplers using a 3″ channel |
| 2″ On-Center Hole Spacing | Supports standard adjustable channel positioning |
| Heavy-Gauge Steel Construction | Built for farm, construction, and heavy-duty utility trailer applications |
| Black Powder-Coated Finish | Helps protect against rust and corrosion |
Overview
The Adjustable Trailer Coupler Hitch Mount 8978XL features a tall, six-hole channel bracket offering greater range of towing height adjustment than standard mounts. Designed for heavy-duty applications, this 3″-wide channel accepts multiple coupler styles including Bulldog-style, lunette, and clevis types, helping provide level, secure towing for agricultural, industrial, and utility trailers.
R&P Service Insight
Before ordering an adjustable coupler bracket, match the channel width, hole spacing, pin or bolt diameter, and trailer application. Do not rely on appearance alone when replacing trailer coupler hardware.
- Channel Width: This listing is for a 3″ inside channel width.
- Hole Pattern: This bracket uses a 6-hole pattern with holes spaced 2″ on center.
- Hardware Check: Use only Grade-8 bolts or ¾″ pins, and check torque periodically for safe towing.
R&P Knowledge Hub
Compatibility: Fits 3″ adjustable couplers and standard channel hardware where measurements and mounting points match.
Vehicle / System Fit: Used for adjustable trailer coupler setups on farm, construction, heavy-duty utility, agricultural, and industrial trailers.
Installation Notes: Verify trailer and hitch load ratings before use. Confirm channel width, hole spacing, and pin or bolt size before ordering.
Performance Insight: The extended-length design provides finer coupler height adjustment and is useful for trailers requiring greater coupler height range.
Brand & Fitment Note
Selling Brand: Not specified.
Application Reference: Bulldog-style, lunette, clevis, and adjustable coupler references describe application style only. Verify measurements and mounting points before ordering.
What This Means: This listing is for an adjustable trailer coupler hitch mount / extended channel bracket, not a guaranteed OEM-branded item unless specifically stated and verified.
Before Ordering: Verify channel width, hole spacing, pin or bolt diameter, mounting style, trailer rating, hitch rating, and application before installation.
R&P Repair Insight
Adjustable coupler brackets should be selected by measurement and application. A trailer requiring greater coupler height range should be matched to the correct channel size, hole pattern, and hardware before installation.
- Check the Channel: Confirm the coupler is designed for a 3″ inside channel.
- Check the Hardware: Confirm the setup uses ¾″ pins or compatible Grade-8 bolts.
- Check the Rating: Always verify trailer and hitch load ratings before use.
Features
3″ Inside Channel Width
Fits most adjustable trailer couplers using a 3″ channel setup.
Six-Hole Extended Bracket
Six precision holes spaced 2″ on center provide maximum height range and finer coupler height adjustment.
¾″ Pin / Grade-8 Bolt Compatibility
Compatible with ¾″ diameter pins or Grade-8 bolts for secure adjustable coupler mounting.
Heavy-Gauge Steel Construction
Forged and welded heavy-gauge steel construction is designed for long service life in heavy-duty trailer use.
Black Powder-Coated Finish
Black powder-coated finish helps protect against rust and corrosion.
Versatile Trailer Applications
Ideal for farm, construction, heavy-duty utility, agricultural, and industrial trailers.
Included Components
| Quantity | Item |
|---|---|
| 1 | Adjustable Trailer Coupler Hitch Mount – 3″ Channel, 6-Hole Extended Bracket, Part Number / SKU 8978XL |
| Not Included | Mounting hardware, pins, bolts, nuts, coupler, lunette eye, and clevis components |
