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

Detail produk:

Tempat asal:	Guangdong, Tiongkok
Nama merek:	GUOMAT
Sertifikasi:	ISO/TS16949:2009
Nomor model:	G4004

Syarat-syarat pembayaran & pengiriman:

Kuantitas min Order:	6 buah
Harga:	USD49.9-79.9/PC
Kemasan rincian:	Kotak Karton Yang Kuat Atau Sesuai Kebutuhan Pelanggan
Waktu pengiriman:	2-8 hari kerja
Syarat-syarat pembayaran:	T/T, Western Union, Paypal dan lain-lain
Menyediakan kemampuan:	5000PCS/MINGGU

Kontak

Detil Deskripsi produk

Bahan produk:	Karet alam	Posisi:	Depan
OEM:	OEM Diterima, Terima (Dapat Disesuaikan)	nama lain:	Kantung udara
Jaminan:	12 bulan	batu api:	W02-358-4004/Gaya 4004
kemasan:	Karton	nama lain:	Musim Semi Udara Kabin
Menyoroti:	Firestone cab air shock absorber , 4004 suspension air spring , replacement cab air spring

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.