1-53352179-0 1533521790 Rear Front Spring Bracket OEM Standard Size Direct Fit Verified Leaf Spring Bracket for ISUZU CYZ51K 6WF1

The Rear Front Spring Bracket with OEM numbers 1-53352179-0 / 1533521790 is a verified direct-fit replacement for ISUZU CYZ51K, CXZ51, and EXZ51 heavy-duty trucks equipped with the 6WF1 diesel engine. This bracket (BRACKET; FRT SPR, RR) is a critical structural component of the chassis suspension system, installed at the right rear connection point between the front leaf spring and the vehicle frame. It secures the leaf spring to the frame, absorbing longitudinal, lateral, and vertical loads during driving, ensuring accurate leaf spring positioning and proper suspension system operation.

The rear front spring bracket is continuously subjected to alternating loads and road impacts. When the bracket develops cracks, corrosion, deformation, or worn mounting holes, it causes leaf spring misalignment, suspension noise, and vehicle pulling. Timely replacement restores proper suspension system operation and driving safety.

• Real Specification Data: Net weight approximately 3 kg. Material: Steel or Iron. OEM standard size. Color: Customizable. Packaging quantity: 1 pc/set. HS Code: 870899900. Fig.No.-Key No: 501-039.
• Proven Durability: Supplier offers 3-month warranty. Small quantity orders accepted with volume discounts.
• Fitment Confirmed: Standard mounting dimensions, direct replacement design, manufactured to OEM specifications — verified against OEM standard dimensions. Manufactured to ISUZU original standards for direct installation without modification.
• OEM Cross-Reference Verified: Replaces ISUZU OEM numbers 1-53352179-0 / 1533521790. Left-hand counterpart is 1-53352180-0. Some suppliers also list D-125054 as an alternative reference number.

When the rear front spring bracket exhibits the following conditions, timely inspection and replacement are required:

1. Suspension system noise: "Clicking" or metal impact sounds from the front suspension when driving over bumps, caused by worn mounting holes or loose bolts.
2. Leaf spring position offset: Abnormal rear-end position shift of the leaf spring, causing vehicle pulling or front wheel misalignment.
3. Bracket body cracking or deformation: Long-term overloading or road impact causing bracket body cracks or deformation, severely affecting suspension load capacity.
4. Severe bracket corrosion: Severe surface rust and peeling on the bracket, reducing metal cross-section and load-bearing capacity.
5. Abnormal tire wear: Bracket wear causing changes in front wheel alignment parameters, resulting in uneven or sawtooth tire wear.

Certification: Supplier declares 100% factory testing on every unit.

1. Lift vehicle: Safely lift the vehicle so the front suspension is fully unloaded, support the frame with jack stands.
2. Remove old bracket: Remove bracket-to-leaf-spring and bracket-to-frame connecting bolts, extract old bracket. Note bolt locations and quantity.
3. Inspect related components: Check leaf spring eye, shackle pin, and bushing wear; replace if necessary.
4. Install new bracket: Position new bracket, hand-thread all bolts first, confirm alignment, then tighten to specified torque. Specific torque values per ISUZU CYZ51K workshop manual.
5. Check suspension status: Lower vehicle, check leaf spring position, and inspect for suspension noise.
6. Road test: Perform a short road test to confirm proper suspension system operation.

Torque Reference: Bracket connecting bolt torque should reference the ISUZU CYZ51K workshop manual, tightened in steps as specified.

• Every 20,000 km or 6 months: Check bracket for cracks, corrosion, and bolt tightness.
• Every 50,000 km: Inspect leaf spring eye, bushing, and bracket mounting hole wear; replace if necessary.
• When suspension noise or vehicle pulling is detected: Inspect bracket and related components promptly to prevent fault escalation.