The 3.5L 4WD Catalytic Converter Shield from Miller Cat is designed to provide serious protection against catalytic converter theft while maintaining proper fitment and compatibility with factory components.
Engineered specifically for 2016–2023 Toyota Tacoma 4WD models, this shield is precision cut and available in multiple material options to suit different needs—offering a strong physical barrier without interfering with drivetrain or exhaust operation.
The design maintains compatibility with automatic and manual transmissions and works alongside TRD/Off-Road skid plates, provided factory mounting geometry is retained. Built for bolt-on installation, this shield integrates cleanly when installed on a Tacoma equipped with the factory radiator support splash shield.
Special notes
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Not compatible with lift kits that modify the chassis crossmember
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Radiator Support Splash Shield required
- Toyota Part Number: 51406-04020
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Surface imperfections may be present due to manufacturing process
- Professional installation recommended
Features
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Vehicle-Specific Protection: Designed for 3.5L 4WD Tacoma models
- Multiple Material Options:
- 304 Stainless Steel (12 or 16 gauge)
- Premium-grade 5052 Aluminum
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Theft Deterrent Design: Physical barrier helps prevent catalytic converter theft
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Transmission Compatible: Works with automatic and manual transmissions
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Skid Plate Compatible: Works with TRD/Off-Road skid plates
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Bolt-On Installation: No welding required when vehicle meets fitment requirements
Fitment
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Toyota Tacoma: 2016–2023
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Engine: 3.5L
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Drivetrain: 4WD only
Required tools for installation
- Protective eyewear and gloves
- 1/4" bit driver
- 12mm socket
