Toyota Truck Bed Header Rail for 2016–2019 Tacoma — PT278-35100-BH, OEM fit and no-drill install

This authentic Toyota accessory installs across the top of the truck bed header to provide a durable mounting surface for bed add-ons and tie-in points while maintaining the factory appearance. Designed specifically for 2016–2019 Tacoma long-bed and short-bed models, the header rail uses existing factory screw locations for a straightforward install without drilling, and it complements Toyota’s accessory ecosystem.

What parts of my Tacoma does this header rail fit?

The PT278-35100-BH is engineered for 2016–2019 Toyota Tacoma trucks in both long-bed and short-bed configurations. It lines up with the factory mounting holes at the top of the bed header so it attaches where existing screws are located.

• Compatible with 2016–2019 Tacoma long-bed and short-bed models.
• Mounts using factory screw locations—no new holes required.
• Works with standard bed header dimensions from those model years.

How does installation work—do I need special tools or drilling?

Installation is designed to be simple and minimally invasive: the rail secures to the bed header using the truck’s existing screw points, so drilling is not needed. Basic hand tools are usually sufficient; refer to Toyota’s installation guide for torque specs and sequence.

• Uses existing bed header screws—no drilling necessary.
• Typical install requires common hand tools (ratchet, sockets, screwdrivers).
• Follow Toyota torque recommendations and sequence for secure fitment.

What can I attach to the header rail and how does it help carry gear?

The header rail creates a flat, factory-integrated surface to mount compatible Toyota bed accessories and aftermarket solutions that rely on a solid edge point. It makes adding tie-downs, cargo organizers, or crossbars easier while preserving the truck’s original styling.

• Provides a robust mounting edge for Toyota and compatible aftermarket accessories.
• Improves tie-down options and load-securing locations across the bed mouth.
• Maintains factory look so accessories appear integrated, not bolted-on.

Are any parts missing or not included with the rail?

The header rail ships as the main rail component only; Toyota part 66134-04010 end caps are not included and must be purchased separately if you want finished end coverage. Check your order contents before installation so you can plan for any finishing pieces.

• Main header rail included—end caps (66134-04010) sold separately.
• Verify contents against the Toyota parts list on delivery.
• Optional caps and trim are available from Toyota dealers for a finished look.

Who is this for? The Toyota Genuine Truck Bed Header Rail PT278-35100-BH is built for Tacoma owners who want a factory-fit solution for mounting bed accessories, improving tie-down points, or restoring a clean OEM appearance after modifications. If you drive a 2016–2019 Tacoma and value parts engineered to Toyota standards—offering straightforward installation with existing hardware—this rail delivers a durable, integrated option to expand your truck’s cargo management capabilities.