RALZAOTO Auxiliary Fuel Tank Install Kit 11025 — 1.5" Diesel Installation, Aluminum Gravity-Feed, Corrosion-Resistant

RALZAOTO Auxiliary Fuel Tank Install Kit 11025 is a complete 1½" diesel installation kit that lets you add a gravity-feed auxiliary fuel tank and control fuel level from the OE tank.

If you need to fit an auxiliary diesel tank to your truck, this aluminum-and-rubber install kit provides corrosion resistance, durability and a straightforward fit for many Ford, GM and Dodge diesel models. The kit is designed for 1½" diesel installations, uses quality materials to reduce leaks and connects to the OE system to maintain a reliable gravity fuel supply.

Will this kit fit my truck model and engine?

This kit is compatible with a broad range of diesel trucks but only for diesel engines. Confirm fitment by matching the OE part number 11025 (or 011025) against your vehicle's existing auxiliary tank hardware before purchasing.

• Compatible years/models: Ford 1999–2024, Chevy/GMC 2011–2022, Dodge 1999–2012
• Designed for 1½" fuel connections typical of diesel auxiliary tanks
• Check OEM part numbers 11025 / 011025 for exact fit

How hard is installation and what tools will I need?

The kit is engineered for straightforward installation, using aluminum and rubber components that simplify routing and sealing. Basic mechanical skills and common shop tools are usually sufficient, but one recommended step is using a tool to more tightly seat the RDS fuel tank valve to prevent spillage during hookup.

• Typical tools: wrench set, screwdrivers, pliers and a tightening tool for the RDS valve
• Follow vehicle-specific removal steps for OE fittings and lines
• Hand-tighten connections first, then torque to specifications to avoid leaks

What materials and durability features does the kit include?

RALZAOTO built this kit from aluminum and rubber to reduce corrosion and extend service life in underbody fuel plumbing. Those materials also allow flexibility at joints while keeping a secure gravity-feed path between the auxiliary tank and OE system.

• Aluminum fittings for corrosion resistance and lightweight strength
• Rubber components to damp vibration and ensure reliable seals
• Components sized for a stable gravity fuel supply and consistent fuel level control

Who is this for: The RALZAOTO 11025 Auxiliary Fuel Tank Install Kit is aimed at diesel truck owners, fleet operators and mechanics who want a dependable, OEM-compatible solution to add an auxiliary fuel tank. It's ideal if you drive a compatible Ford, Chevy/GMC or Dodge diesel from the listed model years, need a 1½" diesel connection, and want a durable kit that minimizes corrosion and fuel spillage risk when installed correctly. Always verify the OE part number and follow safe installation practices to ensure proper operation.