Premium Rear Brake Drum 40203-90011 Cast Iron Brake Drum ISO9001

Premium Rear Brake Drum for Nissan Diesel UD Trucks - OE 40203-90011 | High-Durability Casting

Product Overview

The OE 40203-90011 Brake Drum is a specialized heavy-duty component designed for the rear axles of Nissan Diesel (UD Trucks). Engineered to meet the high torque and load requirements of commercial transportation, this brake drum ensures maximum safety and consistent braking efficiency.

Utilizing premium-grade grey cast iron (ASTM G3000), our brake drums feature optimized cooling fins and wall thickness to handle intense thermal loads. Each unit is precision-machined and factory-balanced to eliminate vibration and ensure a perfect fit with OEM wheel hubs. If you are looking for a reliable, long-lasting replacement for your UD truck fleet, the 40203-90011 is the industry standard choice.

Vehicle Compatibility

This brake drum is a direct OEM replacement for several Nissan Diesel (UD) heavy-duty truck series, including:

UD Quon Series: (Various Rear Axle Configurations)

UD Condor Series: (Heavy-duty Models)

Nissan Diesel C-Series: CW, CWB, CWA models

Nissan Diesel Big Thumb: (Selected 6x4 and 8x4 chassis)

Note: Due to variations in axle types, please verify the internal diameter and bolt hole count against your original part before ordering.

Technical Specifications

Accurate technical data is the key to converting professional buyers. Here are the dimensions for OE 40203-90011:

Cross-Reference & Interchange

This product is a certified interchange for the following manufacturer part numbers:

Nissan Diesel (UD): 40203-90011, 4020390011

Isuzu Reference: (Cross-compatible in select regional markets)

Aftermarket Reference: UD-BD011

Industry Standard: 40203-Z5008 (Related variant)

Key Benefits

High Carbon Alloy: Enhanced material density provides superior resistance to thermal fatigue and surface "heat checking."

OEM Geometric Precision: 100% matched to original equipment specifications for a seamless "drop-in" installation.

Balanced Performance: Advanced dynamic balancing reduces friction noise and prevents premature wear on wheel bearings and oil seals.

Corrosion Protection: Each drum is finished with a protective coating to prevent rust during shipping and storage, ensuring immediate serviceability.

Cost-Effective Fleet Solution: Offers the durability of an original part at a competitive aftermarket price point, reducing your total cost per mile (CPM).

Frequently Asked Questions (FAQ)

1. Which vehicle models is the 40203-90011 Brake Drum compatible with?

The 40203-90011 Brake Drum is a premium-grade OEM replacement part specifically designed for Nissan UD (Ultimate Dependability) trucks. It is most commonly used on heavy-duty models such as the UD CWA, CWB, and PE6 series. To ensure a 100% perfect fit for your axle, we recommend verifying the 10-hole mounting pattern and checking the pilot diameter against the original part number 40203-90011 or 40203-90010.

2. What material grade is used for the 40203-90011 to handle heavy payloads?

Our 40203-90011 drums are manufactured from high-grade G3000 Grey Cast Iron. This high-carbon metallurgy is chosen for its excellent thermal conductivity and heat dissipation. For UD trucks operating in demanding environments like mining or construction, this material helps prevent brake fade and resists structural "bell-mouthing," ensuring consistent stopping power even under extreme heat and heavy tonnage.

3. Does the 40203-90011 Brake Drum come factory dynamically balanced?

Yes, every 40203-90011 unit undergoes rigorous precision dynamic balancing before shipment. For heavy-duty Nissan UD trucks, an unbalanced drum can lead to significant chassis vibration and "pedal pulsation," which accelerates wear on wheel bearings, tires, and hub seals. Our pre-balanced drums ensure a smooth rotation, improving driver comfort and reducing the total cost of ownership (TCO) for fleet operators.

4. How can I tell when it is time to replace my Nissan UD 40203-90011 Brake Drum?

Safety is paramount for heavy-duty hauling. You should inspect the 40203-90011 during every brake lining change and replace it if:

The Wear Limit is Reached: The internal diameter meets or exceeds the Maximum Diameter (Max Dia) limit cast on the outer rim of the drum.

Thermal Stress Cracks: You see deep radial cracks (heat checks) on the friction surface that indicate the metal's structural integrity has been compromised.

Severe Scoring: Deep grooves are present that prevent the brake shoes from making full, even contact with the drum.