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When a bearing goes out on the road, you don’t want to dig through parts. This Redline hub assembly comes complete with everything you need—bearings, races, grease seal, grease cap, wheel bolts, and lug nuts already included. It fits 2,000-lb axles with BT8 spindles and is built from sturdy iron for dependable durability. With a full kit like this on hand, roadside repairs or trailer restorations go a lot smoother.
Finding the right hub size can be tricky when working on older or custom trailers. This idler hub is made for 10" to 12" wheels and uses a common 5 on 4-1/2" bolt pattern with 1/2" wheel bolts. The flange diameter of the grease cap is 1.986", making it simple to match up with standard bearing protectors or dust caps. Each hub has a 1,000-lb capacity for light-duty towing setups and small trailers.
Good alignment starts at the bearings. Both the inner and outer bearings are L44643 with a 1" inner diameter, and their races—L44610—are already pressed in at the factory for perfect seating. The included double-lip grease seal (part 34823) measures 1.249" inner diameter and 1.983" outer diameter to keep lubricant where it belongs. You get consistent performance without the guesswork of pressing races yourself.
This hub’s solid iron build gives it reliable strength for constant towing duty. Whether you’re refurbishing an old trailer or adding a spare for emergencies, it’s designed to keep rolling mile after mile without flexing or wearing unevenly. Paired with proper greasing and torque on the lug nuts, it’s a long-term fix that holds up under regular use.
Ensuring your wheel or hub has the correct bolt pattern is essential for a proper fit. The following diagrams show how to measure both even and odd-numbered bolt patterns accurately.
1. Count the lug holes
Look at the wheel hub or the back of the wheel and count how many lug holes there are(also called bolt holes).
Common configurations include: 4-lug, 5-lug, 6-lug and 8 lug
2a. For even lug counts (4-lug, 6-lug, 8-lug)
Measure from the center of one lug hole directly across to the center of the hole opposite it.
Common configurations: 4 on 4", 6 on 5.5", 8 on 6.5"
2b. For odd lug counts (5-lug)
Measure from the center of one lug hole to the outer edge of the hole directly across (not center-to-center since there's no directly opposite hole).
Common configurations: 5 on 4.5" (most popular), 5 on 5", 5 on 4.75", 5 on 5.5"
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