GREPSPUD 4-on-4" 2000 lb Trailer Hub Kit — Black Coated Hub for 1" or 1-1/16" Axles, 16-Piece Set

GREPSPUD 4 on 4" trailer hub kit is a complete 16-piece replacement hub assembly for 2000 lb trailers that fits both 1" and 1-1/16" straight axles.

This kit supplies every part needed to replace a single 4 on 4" idler hub on light trailers: the coated steel hub with pre-installed bearing races, two bearing sizes (L44643 and L44649) for 1" and 1-1/16" axles, grease seals, dust caps, lug nuts, cotter pin and rubber plugs. Parts arrive neatly packaged in protective bubble bags and a sturdy cardboard box to reduce transit damage. The hub’s black finish and zinc-plated dust caps resist corrosion, while the included components cover the two most common spindle diameters so you won’t need to hunt for extra bearings.

How do I know this hub kit will fit my trailer spindle?

This kit is designed for 4 on 4" bolt pattern idler hubs rated for 2000 pounds and works with either a 1" or 1-1/16" straight axle spindle. It includes both L44643 (1" ID) and L44649 (1-1/16" ID) bearings and two grease seals sized to match those bearings. Measure your spindle diameter to confirm compatibility, or compare your old bearings to the included part numbers.

• Fits 4 on 4" bolt pattern hub for 2000 lb trailers
• Includes L44643 and L44649 bearing pairs for both spindle sizes
• Supplied grease seals for each bearing inner diameter
• Pre-installed bearing races in the hub for easier assembly

What comes in the 16-piece GREPSPUD hub assembly kit?

The kit is a practical all-in-one replacement set so you don’t need separate purchases. Everything is included to mount and secure the hub on a compatible spindle, including fasteners and protective caps. This makes on-trailer repairs faster and reduces the risk of missing small but essential parts.

• 1x 4-bolt GREPSPUD hub (4" bolt circle) with races
• 2x L44643 bearings (for 1" spindle) and 2x L44649 bearings (for 1-1/16" spindle)
• 4x 1/2"-20 lug nuts, 2x dust caps, 2x rubber plugs
• 1x 1.25" I.D and 1x 1.5" I.D grease seals, 1x cotter pin

How durable is the hub and what installation tips should I know?

GREPSPUD hubs are made from high-quality steel with a black protective coating, and dust caps are zinc-plated to resist rust and corrosion during regular use. For a secure fit, grease seals and dust caps are intentionally slightly oversized; they should be tapped into place using a wood block or rubber mallet to avoid damage. Follow standard wheel bearing packing and torque procedures when installing.

• Black-coated hub surface for corrosion resistance
• Zinc-plated dust caps to prevent rust
• Seals and caps are oversized—use a wood block or rubber mallet to seat them
• Bearings and races pre-installed or supplied for straightforward assembly

Will I get support if a part is missing or damaged?

GREPSPUD offers a satisfaction guarantee: contact the seller if any part is missing, damaged, or otherwise unsatisfactory, and you can request replacement or refund. Packaging is designed to protect each small component, but customer service is available if issues arise during shipping or installation.

• Sturdy cardboard box with individual bubble wrapping for parts
• Replacement or refund offered for defects or missing items
• Contact GREPSPUD customer support for post-sale assistance

Who is this for: This GREPSPUD 4 on 4" trailer hub kit is intended for DIYers, fleet managers, and trailer owners who need a complete, value-packed replacement hub for light trailers rated up to 2000 lb. It’s especially useful when axle spindle size is uncertain—supplied bearings cover both 1" and 1-1/16" diameters—so repair shops and home mechanics can finish axle service in a single visit without sourcing extra parts.