Firestone 5712 W01-358-5712 Airide Reversible Sleeve Air Spring 1T14C-7

The Firestone W01-358-5712 (bellows number 1T14C-7) is a genuine Firestone Airide reversible sleeve air spring engineered to enhance ride comfort and suspension performance in heavy-duty truck and trailer applications. This assembly order number carries the alternate bellows designation 1T14F-8 and serves as a direct replacement for Capacity of Texas air springs.

Key Features:

• Reversible Sleeve Design: Provides consistent, reliable performance across a wide range of suspension travel and load conditions
• Composite Fiberglass-Reinforced Plastic Piston: Manufactured using high-percentage glass-filled thermosetting resin with state-of-the-art SMC technology — lighter than steel or aluminum, more impact-resistant, and impervious to corrosion, water, salt, and ice-melting chemicals
• Extended Bellows Life: The smooth, non-porous piston surface virtually eliminates harmful dirt and grit buildup, reducing wear as the rubber bellows flexes, significantly extending service life
• Cold-Weather Rated: Fully functional at temperatures as low as -40°F
• 3/4 NPT Air Inlet: Configured with blind nuts and 3/4 NPT port (assembly W01-358-5712); 1/4 NPT is the standard Firestone option
• Zinc/Chromate Plated Bead Plates: 9-gauge carbon steel bead plates permanently crimped to the bellows, providing an airtight, rust-protected assembly factory leak-tested before shipment

Part Numbers & Cross-References:

• Assembly Order Number: W01-358-5712
• Bellows Number: 1T14C-7 / 1T14F-8
• Replaces: Capacity of Texas air spring

Firestone Airide is the world's leading supplier of air suspension and air springs, with over 80 years of experience designing and manufacturing solutions that eliminate vibration across automotive, heavy-duty, and off-highway applications. The W01-358-5712 is a proven choice for reducing component wear, minimizing maintenance costs, and improving driver safety and productivity on heavy-duty trucks and trailers.