Warrenaut Bed Rail End Cap for Toyota Tacoma & Tundra — 2‑Piece Rubber Replacement (OEM 66134-04010 Fit)

Warrenaut bed rail end caps are replacement rubber end pieces designed to restore and protect the factory bed rail ends on compatible Toyota Tacoma and Tundra trucks.

If the plastic or rubber end caps on your truck's bed rails are cracked, missing, or worn, these Warrenaut replacements slip into the rail openings to renew appearance and keep the rail assembly sealed from dirt and moisture. Sold as a pair and listed as compatible with OEM part number 66134-04010, these caps are molded from durable rubber and finished to match common Toyota bed rail profiles for a straightforward swap.

Will these end caps fit my Toyota Tacoma or Tundra?

These caps are built to fit specific model years of Toyota trucks; compatibility depends on the factory rail design and the OEM part number. They match the rail end geometry found on many Tacoma and Tundra beds across listed years, but you should confirm fitment before purchase.

• Replace part number: 66134-04010 — check your vehicle’s existing part stamp or service manual.
• Applicable Tacoma model years: 2005–2023 — verify bed rail style on your truck.
• Applicable Tundra model years: 2007–2021 — confirm the rail end shape matches.
• Sold as a pair (2 pieces) to cover both sides of the bed rail.

What material are the Warrenaut rail caps made from and how durable are they?

The replacement caps are crafted from resilient rubber with fine molding for clean edges and a close fit to the rail channel. Rubber offers impact absorption, weather resistance, and a snug seal to help prevent rattles and ingress of debris compared with brittle plastic.

• Material: molded rubber for flexibility and weather resistance.
• Finish: smooth, factory-compatible surface to blend with existing rails.
• Durability: resists cracking from sun exposure and minor impacts.
• Adaptability: designed for aftermarket fit on compatible Toyota rails.

How do I install the bed rail end caps and what tools are needed?

Installation is simple and usually requires no specialist tools — the caps press into the open rail ends and seat into the receptor. For older beds with residual adhesive or debris, a quick clean and light lubricant will ease installation; replacement is typically a few minutes per side.

• Installation method: push-in replacement — align and press into the rail slot.
• Tools: soft cloth, isopropyl wipe, small plastic trim tool or lubricant if needed.
• Preparation: remove old remnants, clean mating surfaces, test-fit before final seating.
• Time: around 5–10 minutes per cap for a clean installation.

What should I check before ordering these replacement caps?

Before ordering, compare your truck’s existing rail end shape and any printed part numbers to the listed compatibility so you receive the correct match. If in doubt, inspect the current cap for the OEM number or photograph the end rail and consult fitment guides or customer service for confirmation.

• Verify OEM number 66134-04010 on existing parts if available.
• Confirm your truck year and bed rail style against the compatibility range.
• Check that both driver and passenger-side ends require replacement (sold in pairs).
• Contact seller with photos if you’re unsure about fitment.

Who is this for: Warrenaut bed rail end caps are intended for Toyota Tacoma and Tundra owners who need an affordable, OEM-style replacement for missing or damaged rail ends. They suit DIY truck owners, restoration projects, or anyone wanting to stop rail-end rattles and keep water and dirt from entering the rail cavity without replacing the entire rail assembly. Confirm fitment for your model year before purchase to ensure a clean, lasting installation.