Mazda Leaf Spring Bushing OEM 055934330

In the leaf spring suspension system of Mazda Titan/T-series and Kia Bongo/K-series commercial trucks, the leaf spring bushing is a small but critical component that isolates the frame from the leaf spring, absorbing impact and torsional loads. Once the rubber ages and cracks, the vehicle develops clunking noise, wandering steering and uneven tire wear that directly affect driving safety and transport efficiency. This article covers the structure, applications, cross-reference numbers, failure symptoms and installation guidance for Mazda OEM 055934330, helping European and American OEMs and buyers quickly source a reliable replacement. Hebei Tongsource International Trade Co., Ltd. is the wholly-owned export subsidiary of Hebei Huami New Material Technology Co., Ltd. (Beijing Stock Exchange-listed), and has long supplied factory-direct rubber damping and sealing components to customers worldwide.

1. Product Overview & Structure

The Mazda leaf spring bushing OEM 055934330 is a rubber-to-steel composite bushing installed at the front eye or rear shackle of the leaf spring, isolating the frame from direct rigid contact with the leaf spring. It consists of an inner steel sleeve bonded to an outer rubber layer through a vulcanization process, ensuring the bond withstands sustained radial, torsional and impact loading without delamination or cracking. It is widely used across Mazda's medium/heavy-duty truck range and the Kia-built trucks sharing the same platform.

2. Material & Manufacturing Advantages

The bushing uses a natural rubber (NR) or nitrile rubber (NBR)-based compound, balancing weather resistance, oil resistance and elastic rebound, with a post-vulcanization hardness controlled at 70-80 Shore A to provide both ride comfort and sufficient structural support. The inner sleeve is rust-treated carbon steel, bonded to the rubber layer via high-temperature vulcanization; bond strength is verified by pull-off testing to withstand repeated loading cycles without loosening. Cross-referenced OEM numbers include Mazda 0559-34-330 and W114-34-330, and Hyundai 05593-4330A and 055934330, confirming this bushing's commonality across the shared Mazda/Hyundai-Kia commercial truck platform — useful for buyers sourcing cross-brand replacements.

3. Vehicle Applications

● Mazda Titan (Standard) WE / WG / WH, produced through approx. June 2004 (H16.06)

● Mazda Titan (Specially Equipped) WE / WG / WH, through approx. June 2004

● Mazda T2600 WG

● Mazda T3000 WG

● Mazda T3500 WG / WH

● Mazda T4000 WG / WH

● Mazda Parkway WV (bus chassis)

● Kia Bongo III, 2004 – October 2006

● Kia Frontier (1.3-ton / 2.5-ton), from 2000

● Kia K2500 / K2700 / K2700II / K3000 / K3000II, from 1997

● Kia K3000S / K4000S (1.3-ton), from 2000

● Kia K3600 / K3600II (2.5-ton), from 2000

● Kia K3600S, from 1995

● Kia Trade, from 1995

Note: Kia's Bongo/K-series trucks were built on a licensed Mazda Titan platform, sharing essentially the same chassis and suspension architecture — hence the shared bushing part number.

4. Cross-Reference Table

Brand	Part Number
Mazda	055934330
Mazda	0559-34-330
Mazda	W114-34-330
Hyundai	05593-4330A
Hyundai	055934330
Febest (aftermarket)	MZAB-090

5. Typical Failure Symptoms

1. Rubber hardening, cracking or powdering on the surface

2. A clunking or knocking noise from the leaf spring area over bumps or corners

3. Rear axle lateral movement ("axle walk"), vague or wandering steering

4. Uneven or one-sided tire wear

5. Metal-to-metal grinding noise once the rubber is fully worn through

6. Increased cabin vibration and reduced ride comfort

7. Visible bushing deformation or extrusion at the shackle

6. Key Specifications

Item	Reference Specification
Material	Natural rubber (NR) or NBR + carbon steel inner sleeve, vulcanized bonding
Hardness	75±5 Shore A
Mounting Position	Leaf spring front eye / rear shackle
Operating Temperature	-40°C to +100°C
Dimensions	Manufactured to Mazda OEM 055934330 drawing; custom sizing available on request
Surface Treatment	Blackened or zinc-plated steel sleeve for corrosion resistance
Certification	IATF16949 / ISO9001 / ISO14001

7. Installation Notes

1. Verify vehicle VIN and OEM part number to confirm exact match with 055934330 before installation

2. Replace leaf spring bushings in pairs to avoid uneven suspension loading from mismatched wear levels

3. Use proper pressing tools during installation; avoid direct hammering, which can damage the rubber layer or deform the steel sleeve

4. Use a rubber-safe assembly lubricant; never use petroleum-based grease, which degrades rubber

5. Perform final torque with the vehicle at curb weight and suspension at normal ride height to avoid abnormal preload

6. After installation, check that the bushing is centered and the leaf spring moves freely without binding

7. Periodically inspect shackle brackets and pins for wear, as worn mating parts shorten bushing service life

8. FAQ

Q1: Which Mazda Titan model years does this bushing fit?

A: It fits the Mazda Titan Standard and Specially Equipped WE/WG/WH series, produced through approximately June 2004 (H16.06). Please confirm against your vehicle VIN and OEM part number.

Q2: Can this bushing be used on Kia K-series trucks?

A: Yes. Kia Bongo III, Frontier, K2500/K2700/K3000/K3600 and related models share the same chassis and suspension platform as the Mazda Titan, so they use the identical bushing part number.

Q3: Is this bushing made of natural rubber or polyurethane (PU)?

A: Our standard OEM-grade product uses a natural rubber/NBR compound for closer-to-original NVH performance. A polyurethane version can be custom-manufactured for higher stiffness, though PU typically transmits more road vibration.

Q4: How often should this bushing be replaced?

A: Service life depends on load, road conditions and usage; we generally recommend inspection every 80,000-100,000 km or immediately if clunking noise or steering wander appears.

Q5: Can you produce custom dimensions?

A: Yes, we can produce to customer drawings or samples; MOQ depends on the specific specification.

Q6: Is your production quality-certified?

A: Hebei Huami New Material Technology Co., Ltd. is certified to IATF16949, ISO9001, ISO14001, TÜV and AEO standards, meeting international OEM supplier requirements.

Q7: What is your MOQ and lead time?

A: MOQ and lead time depend on order specifications — please contact our sales team for a detailed quotation.

Q8: Do you support shipment to overseas warehouses in Europe/North America?

A: Yes, we can arrange logistics solutions based on your region to shorten delivery time.

9. Summary & Contact Us

As a key wear part in the leaf spring suspension of Mazda Titan/T-series and Kia Bongo/K-series commercial trucks, the material formula and vulcanization process of the OEM 055934330 leaf spring bushing directly affect vehicle handling stability and ride comfort. Hebei Tongsource International Trade Co., Ltd., leveraging the rubber damping and sealing component manufacturing capability of its parent company Hebei Huami New Material Technology Co., Ltd. (Beijing Stock Exchange-listed, IATF16949/ISO9001/ISO14001/TÜV/AEO certified), offers factory-direct, quality-controlled replacement solutions to customers worldwide. If you're sourcing a reliable leaf spring bushing supplier for Mazda or Kia commercial vehicles, contact us today for a free sample and detailed quotation.