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116710670284-0 - Northline Parts

2007-2021 Toyota Tundra Tailgate Assist Damper | 66140-0C030

SKU: NLT1Q00472
$46.99 In Stock
$46.99
Sale price  $46.99 Regular price 
Ships for free in 2–4 business days.
This aftermarket tailgate assist damper replaces 66140-0C030 and 66140-0C010 on compatible 2007-2021 Toyota Tundra trucks.
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Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
  • Toyota Tundra (2007-2021) with compatible factory-style tailgate damper mounting
  • Regular Cab, Double Cab, and CrewMax body configurations using 66140-0C030 or 66140-0C010

Product Overview

A heavy Tundra tailgate can drop abruptly when the original damper weakens or disappears. This support shock restores controlled opening so the gate lowers in a more manageable motion instead of slamming downward.

The damper assists opening but does not replace the hinge, support cables, latch, or structural repairs. Inspect those parts and confirm the mounting points and listed reference before installation.

This is a high-quality aftermarket replacement or service part and is not manufactured or supplied by the original equipment brand.

Key Features & Performance

  • Slows and controls tailgate descent
  • Reduces the abrupt drop of an unsupported heavy gate
  • Compact vehicle-specific damper layout
  • Aftermarket replacement for the listed Tundra references

Replaces Part Numbers

  • 66140-0C030
  • 66140-0C010

Common Uses

  • Replacing a weak damper that no longer controls the tailgate
  • Adding back missing assist hardware after body repair
  • Making frequent bed access easier during work or daily use

Technical Specifications

  • Product Type: Tailgate assist damper
  • Vehicle Family: Toyota Tundra
  • Model Years: 2007-2021 compatible applications
  • Quantity: One damper assembly
  • Replacement Type: Aftermarket

Installation & Fitment

  • Support the tailgate throughout installation
  • Inspect ball studs, brackets, hinges, cables, and latch operation
  • Orient the damper exactly like the original design
  • Cycle the gate slowly and confirm all retainers are fully seated

Compatibility Notice

Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown. Model names and year ranges alone may not guarantee fitment. Always compare the original component, reference number, dimensions, connectors, engine or vehicle identification, and installed configuration before purchase.

Frequently Asked Questions

Q: Does this hold the tailgate completely open? A: It controls descent; the hinges and support cables carry the open tailgate.

Q: Should both sides have a damper? A: The listed application uses a single assist damper.

Q: Will it repair bent hinges or broken support cables? A: No. Structural and cable damage must be repaired separately.

Q: How should final fitment be confirmed? A: Match the original component and every listed identifier and physical detail; contact Northline Parts with the model, serial number, VIN, engine code, or clear photos when additional help is needed.

Part Summary

keywords: Toyota Tundra tailgate damper, 66140-0C030 replacement, 2007-2021 Tundra tailgate assist, slow drop tailgate shock, Tundra tailgate slams repair

Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.

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