• 10-1/8" long overall 
• 7/8" center hole 
• 9/16" rear spring eye hole 
• 5/16" front hole for slipper end support

Other industry part numbers used:

• 013-4
• 13-4
• 13-004
• 33EQ

Dexter 8-251-5 idler hub fits 2990lb to 3500lb capacity axles and has a 6 on 5-1/2" bolt pattern. Compatible all with 1-1/16" inner diameter outer bearing and a 1-3/8" inner diameter inner bearing combination style E-Z Lube, Sure-Lube, Accu-Lube, Super Lube, Easy Grease and non lubing spindles. Interchangeable with all major trailer axle brands.

1 - Idler hub with 6 on 5-1/2" lug bolt pattern (see image on how to measure lug spacing)

• 4-1/4" overall height
• 1/2"-20 thread pitch lug studs
• 1 - L44610 outer bearing race (pre-installed)
• 1 - L68111 inner bearing race (pre-installed)
• has a 1.98" bore diameter
• Rated 1750 lbs. capacity per side

This trailer idler hub is interchangeable with all industry standard axle brands including Dexter Axle, Lippert Components (LCI), Rockwell American, AL-KO, Axle Tek, TK Trailer Axles, UFP by Dexter Marine, Tie Down by Dexter Marine, and C.E. Smith.

Dexter 8-256-05 idler hub fits 2990lb to 3500lb capacity axles and has a 5 on 5-1/2" bolt pattern. Compatible all with 1-1/16" inner diameter outer bearing and a 1-3/8" inner diameter inner bearing combination style E-Z Lube, Sure-Lube, Accu-Lube, Super Lube, Easy Grease and non lubing spindles. Interchangeable with all major trailer axle brands.

1 - Idler hub with 5 on 5-1/2" lug bolt pattern (see image on how to measure lug spacing)

• 4-1/4" overall height
• 1/2"-20 thread pitch lug studs
• 1 - L44610 outer bearing race (pre-installed)
• 1 - L68111 inner bearing race (pre-installed)
• has a 1.98" bore diameter
• Rated 1750 lbs. capacity per side

This trailer idler hub is interchangeable with all industry standard axle brands including Dexter Axle, Lippert Components (LCI), Rockwell American, AL-KO, Axle Tek, TK Trailer Axles, UFP by Dexter Marine, Tie Down by Dexter Marine, and C.E. Smith.

Dexter 8-256-07 idler hub fits 2990lb to 3500lb capacity axles and has a 5 on 5" bolt pattern. Compatible all with 1-1/16" inner diameter outer bearing and a 1-3/8" inner diameter inner bearing combination style E-Z Lube, Sure-Lube, Accu-Lube, Super Lube, Easy Grease and non lubing spindles. Interchangeable with all major trailer axle brands.

1 - Idler hub with 5 on 5" lug bolt pattern (see image on how to measure lug spacing)

• 4-1/4" overall height
• 1/2"-20 thread pitch lug studs
• 1 - L44610 outer bearing race (pre-installed)
• 1 - L68111 inner bearing race (pre-installed)
• has a 1.98" bore diameter
• Rated 1750 lbs. capacity per side

This trailer idler hub is interchangeable with all industry standard axle brands including Dexter Axle, Lippert Components (LCI), Rockwell American, AL-KO, Axle Tek, TK Trailer Axles, UFP by Dexter Marine, Tie Down by Dexter Marine, and C.E. Smith.

The most secure and universal trailer coupler lock available, fits virtually all 1-7/8”, 2”, and 2-5/16” tongue type trailer couplers. Made from the highest quality corrosion resistant materials, the unique design uses a hardened steel reversible “U” shaped shackle that allows the lock to fit almost any trailer coupler style, and is easily accessed from the front.

Locking and unlocking the FORTRESS is quick and easy with a front-facing key hole so there isn't anything to reach around to turn the key. The lock cylinder is smooth, making it an easy key turn. The solid engagement of the dual locking pins into both ends of the shackle provides the most security and peace of mind you can get in a coupler lock. The lock has a winged cover, protecting it from dirt, debris, rust, water, and ice.

The FORTRESS coupler lock is perfect for boats, RVs, ATV trailers, travel trailers, enclosed trailers, horse trailers, and just about every bumper style trailer with a 1-7/8”, 2”, or 2-5/16” coupler.