ISUZU NPR NQR 700P Rear Hub Oil Seal with Dual-Lip Design NBR Material OEM Fit 8

Rear Hub Outer Oil Seal 8-94336317-0 8943363170 for ISUZU NPR NQR 700P ELF 4HK1 4HF1 — Verified OEM Fit 49×100×8/9.5 mm NBR Wheel Hub Seal

The Rear Hub Outer Oil Seal with OEM numbers 8-94336317-0 and 8943363170 is a verified direct-fit replacement for ISUZU NPR / NQR / 700P / ELF / NKR / J116 / N600 light and medium-duty trucks equipped with 4HK1 / 4HF1 / 4BD1 / 4HE1 diesel engines. This oil seal is a critical rear wheel hub sealing component, responsible for retaining hub lubrication and preventing dirt, water, and debris from entering the rear wheel bearing assembly to ensure smooth bearing operation and extended component life.

The rear hub outer oil seal is installed in the rear wheel hub assembly, creating a dynamic seal between the rotating hub and the stationary axle housing. It retains gear oil and grease within the wheel bearing cavity while preventing external contaminants from entering.

The dual-lip design features a primary sealing lip that maintains contact with the hub surface under spring tension, and a secondary dust lip that blocks water, mud, and debris from reaching the primary seal. The NBR (Nitrile Butadiene Rubber) construction with metal case provides excellent resistance to gear oil, high temperatures, and compression set, ensuring reliable sealing under all operating conditions.

Replace the rear hub oil seal when any of these symptoms appear:

• Gear oil leakage at the rear wheel hub — visible oil traces on the wheel or brake drum area.
• Wheel bearing noise or vibration — oil loss and contaminant entry cause accelerated bearing wear, producing growling or rumbling noises from the rear axle.
• Brake contamination — oil leaking past a failed seal can contaminate brake shoes or pads, reducing braking effectiveness.
• Water or mud intrusion — damaged dust lip allows contaminants into the bearing cavity, causing rust and pitting on bearing surfaces.
• Excessive wheel bearing play — prolonged seal failure leads to bearing degradation and detectable wheel play.

1. Preparation: Raise the vehicle on a hoist. Remove the wheel and brake drum. Support the rear axle housing.
2. Disassembly: Remove the axle shaft retaining nuts. Carefully withdraw the axle shaft assembly. Remove the old outer oil seal using a seal puller or pry bar.
3. Inspection: Inspect the hub sealing surface for wear, scoring, or pitting. Inspect the wheel bearing for wear or damage. Replace any damaged components.
4. Cleaning: Clean the hub bore and axle shaft thoroughly. Remove all old seal material and grease.
5. Installation: Coat the new oil seal lip with MP grease. Use a seal driver or socket that matches the seal outer diameter to press the seal into the hub bore until it is fully seated.
6. Axle Shaft Installation: Carefully reinstall the axle shaft assembly. Tighten the axle shaft retaining nuts to 59 N·m (51 lb·ft) or as specified in the ISUZU workshop manual.
7. Final Check: Verify the hub rotates smoothly without binding. Check for gear oil leakage at the seal.
8. Road Test: Lower the vehicle and perform a road test to verify wheel bearing operation and noise levels.

• Every 10,000 km: Inspect oil seal for gear oil leakage. Check wheel bearing for abnormal noise or play.
• Every 40,000–50,000 km: Inspect wheel bearing condition. Replace oil seal if any leakage or damage is found.
• Whenever the wheel hub is removed: Always replace the oil seal with a new unit.
• When brake contamination is detected: Inspect oil seal immediately. Replace if any oil leakage is found.

• Standard Packaging: Sealed bag + moisture barrier + carton.
• Custom Packaging: Neutral box, color box, or customer-branded packaging.
• Suitable For: Wheel hub repair shops, ISUZU parts distributors, fleet maintenance centers.
• Supply Capacity: Stable batch supply with batch-level quality reports available.
• Minimum Order Quantity: 5 PCS