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W02-358-4004 Firestone Cab Air Shock Absorber Style 4004 Suspension Air Spring Replacement
W02-358-4004 Firestone Cab Air Shock Absorber Style 4004 Suspension Air Spring Replacement
W02-358-4004 Firestone Cab Air Shock Absorber Style 4004 Suspension Air Spring Replacement
W02-358-4004 Firestone Cab Air Shock Absorber Style 4004 Suspension Air Spring Replacement
Specifications
Brand Name :
GUOMAT
Model Number :
G4004
Certification :
ISO/TS16949:2009
Place of Origin :
GuangDong, China
MOQ :
6pcs
Price :
USD49.9-79.9/PC
Payment Terms :
T/T,Western Union,Paypal and Others
Supply Ability :
5000pcs/week
Delivery Time :
2-8 work days
Packaging Details :
strong carton box or as customers need
Product Material :
Natural Rubber
Position :
Front
Oem :
OEM Accepted,Accept(Can Be Customized)
Other name :
Air Bag
Warranty :
12 months
Firestone :
W02-358-4004/Style 4004
Package :
Carton
Other Name :
Cab Air Spring
Description
W02-358-4004 Firestone Cab Air Shock Absorber Style 4004 Suspension Air Spring Replacement
Product Overview

W02-358-4004 Firestone Cab Air Shock Absorber Style 4004 Suspension Air Spring Replacement

Specifications
Type Air suspension spring Model NO. G4004
Car make Truck Cab Suspension Package Strong Cartons
Position Front/Rear Warranty One year
Rubber type Natural Rubber Place of origin Guangzhou China
Replacement Part Numbers
  • Firestone Style: 4004
  • Firestone Number: W023584004
  • Firestone Number: W02 358 4004
  • Firestone Number: W02-358-4004
  • Firestone Number: WO23584004
  • Firestone Number: WO2 358 4004
  • Firestone Number: WO2-358-4004
Technical Data
  • The top cover plate diameter: 1.65"
  • Air fitting: 1/8NPT
  • Piston width: 1.38"
  • Threaded hole: 3/8-16
  • Max. outer diameter: 3.1"
  • Design height: 5.5"
  • Min. height: 3.6"
  • Max. height: 9"
Volume @ 80 PSIG = 20 in³ | Natural Frequency
Gage Pressure (PSIG) Load(lbs.) Spring Rate (lbs./in.) CPM HZ
40 150 55 113 1.88
60 220 70 107 1.78
80 290 91 105 1.74
100 380 99 95 1.59
Assembly Height Specifications
Assembly Height (in.) Volume @ 80 PSIG (in³) @20PSIG @40PSIG @60PSIG @80PSIG @100PSIG
7 26 80 160 230 320 410
6 22 80 160 120 300 400
5 18 70 150 210 290 370
4 14 60 140 200 270 340
Quality Assurance & Warranty

To ensure reliable performance in demanding commercial vehicle applications, each air suspension component undergoes strict quality control and inspection procedures before leaving the factory.

Comprehensive Quality Testing

Every air spring is subjected to multiple tests, including:

  • Air Tightness Testing: Each unit is pressurized and monitored to ensure there is no leakage from the rubber bellows, crimped edges, or air fittings.
  • Burst Pressure and Structural Integrity Testing: The air spring is tested under high internal pressure to verify that the reinforced rubber and metal components can withstand extreme operating conditions without failure.
  • Fatigue and Durability Testing: Repeated compression and extension cycles are simulated to evaluate long-term performance and resistance to material fatigue.
  • Dimensional and Mounting Inspection: Critical dimensions such as mounting hole spacing, plate diameter, and height range are checked to ensure proper fitment and interchangeability with original equipment parts.
Material and Manufacturing Standards

The rubber air sleeve is produced using multi-layer reinforced elastomer compounds designed to resist:

  • Cracking caused by temperature fluctuations
  • Ozone and environmental aging
  • Continuous flexing and pressure cycling during daily operation

Metal components are treated to improve corrosion resistance, helping extend service life in harsh road and weather environments.

One-Year Limited Warranty

All air springs are backed by a 12-month warranty from the date of shipment. During this period, products found to have manufacturing defects under normal operating conditions are eligible for replacement or technical support.

This warranty provides customers and fleet operators with added confidence when selecting replacement air suspension components for their vehicles.

W02-358-4004 Firestone Cab Air Shock Absorber Style 4004 Suspension Air Spring Replacement
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W02-358-4004 Firestone Cab Air Shock Absorber Style 4004 Suspension Air Spring Replacement

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Product Detail
Brand Name :
GUOMAT
Model Number :
G4004
Certification :
ISO/TS16949:2009
Place of Origin :
GuangDong, China
MOQ :
6pcs
Price :
USD49.9-79.9/PC
Contact Supplier
W02-358-4004 Firestone Cab Air Shock Absorber Style 4004 Suspension Air Spring Replacement
W02-358-4004 Firestone Cab Air Shock Absorber Style 4004 Suspension Air Spring Replacement

GUANGZHOU GUOMAT AIR SPRING CO. , LTD

Verified Supplier
10 Years
guangdong, guangzhou
Since 2006
Business Type :
Manufacturer, Agent, Exporter
Main Products :
Suspension Air Spring, Industrial Air Spring, Air Suspension Compressor
Total Annual :
5999900-6999900
Employee Number :
159~189
Certification Level :
Verified Supplier
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