Firestone 4118 air spring helper kit, suits a variety of vehicles as listed below, designed for those who have varying rear loads where coils alone can’t suit all the ways the vehicle is used.
Kit Number: W237604118
Designed to work in temperatures between -40ËšF (-40ËšC) and 180ËšF (82ËšC)
Easily control air pressure in the air springs for varying loads and conditions
Spring performance can be altered as easily as inflating a tire
Made of durable, elastic polyurethane
Complete kit – 1 per vehicle
Inserts inside your rear coil springs to add additional load support
Manually inflate or deflate the air bags to add or remove support or height
Perfect for people who tow, or regularly load up fully and need additional height or support
Works with 0-1″ of lift
Route the airlines to your rear bumper or a suitable place to easily add or remove air to the bags
2001 Toyota Echo
2002 Toyota Echo
2003 Toyota Echo
2004 Toyota Echo
2005 Toyota Echo
1998 Toyota Sienna
1999 Toyota Sienna
2000 Toyota Sienna
2001 Toyota Sienna
2002 Toyota Sienna
2003 Toyota Sienna
1992 Jeep Grand Cherokee
1993 Jeep Grand Cherokee
1994 Jeep Grand Cherokee
1995 Jeep Grand Cherokee
1996 Jeep Grand Cherokee
1997 Jeep Grand Cherokee
1998 Jeep Grand Cherokee
1992 Jeep Grand Wagoneer
1993 Jeep Grand Wagoneer
1994 Jeep Grand Wagoneer
1995 Jeep Grand Wagoneer
1996 Jeep Grand Wagoneer
1997 Jeep Grand Wagoneer
1998 Jeep Grand Wagoneer
Individual Air Accessory Components Are Also Available, Including Compressors, Air Tanks, And Mounting Solutions, Providing A Wide Variety Of Air Control Assist Solutions
Adjust The Ride For Various Load And Road Conditions With A Switch, Remote Or Mobile App
Provides An Instant Air Source For The Air Helper Springs Or Accessories
Single Point Fill (Both Air Springs Fill To The Same Pressure)
Light Duty Compressor Specs (100 Pounds Per Square Inch Max Air Pressure, 9 Percent Duty Cycle, 0.32 CFM)
Electric analog gauge and a single toggle switch (includes housing for easy installation).
Plug and play wiring harness.
30ft of 1/4″ tubing. All required hardware for installation.
No-Drill Mounting Plate
Limited 2 Year Warranty
Dash Panel Style:Â Controls Two Air Springs Simultaneously
Type:Â Heavy Duty
Maximum Pressure (PSI):Â 100 Pounds Per Square Inch
These suit 2007-2021 Toyota Tundra, 2005-2023 Toyota Tacoma with thick/heavy leaf packs (like L59-112-R) and 2019-2023 Ford Ranger USA Spec with thick/heavy leaf packs (like L19-133-R), also fit other International trucks and SUV’s
Made from the highest quality raw materials to give years of life under the harshest conditions
Over 60 years of leaf spring design and manufacturing
Includes 4 U-bolts, enough for 1 vehicle
Requires 2″ lift leaf springs to ensure proper fitment
These are a 30mm longer version of UB59-453-2K Ubolts
These are 210mm / 8.25″ in length
Photo for illustration purposes. These are square at the top
Suits 4th and 5th Gen 4Runner (2003-2024), FJ Cruiser (all years), GX470, GX460
Comes with highly flexible rubber bushings installed, and also high quality polyurethane bushings and sleeves included in case you prefer to run poly instead of rubber
Made from HSLA (High Strength Low Alloy) Steel, 5mm (0.2″) wall thickness, and powder coated black
Oversized adjusters and rod thickness for maximum strength and durability with double-nut locking feature
Zinc plated, then powder coated black, for the ultimate finish and protection
Bryan (verified owner) –
5 Stars!!
Brian (verified owner) –
This is my go-to now for off road parts.
Christopher (verified owner) –
Great description on the page, easy to understand what I was buying.
Joseph (verified owner) –
Value for money, super satisfied.
Bradley (verified owner) –
5 Stars!!
Justin (verified owner) –
Very good customer service, super friendly.