Inner Rear Hub Oil Seal MB308965 for Mitsubishi Fuso Canter — 85×127×13mm with NBR + Metal Casing and Spring-Loaded Sealing Lip
| Outer Diameter: | 127mm | Inner Diameter: | 85mm |
| Thickness: | 13mm | Material: | NBR (Nitrile Butadiene Rubber) + Metal Casing |
| Design: | Spring-loaded Sealing Lip | Position: | Rear Hub Inner |
| Rubber Hardness: | Meets NBR Rubber Hardness Standard | Spring Tension: | Meets Design Tension Standard |
| High Light: | 85×127×13mm Inner Rear Hub Oil Seal,NBR + Metal Casing Oil Seal,Spring-Loaded Sealing Lip Hub Seal |
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The Inner Rear Hub Oil Seal with OEM number MB308965 (cross-reference brands IZUMI / MUSASHI F4219) is a verified direct-fit replacement for Mitsubishi Fuso Canter series medium and heavy-duty commercial vehicles. This oil seal is installed on the rear hub inner side, serving as a critical component of the wheel lubrication system seal.
The inner rear hub oil seal is installed between the inner hub end and the axle shaft, consisting of a metal casing and an NBR (Nitrile Butadiene Rubber) sealing lip. The sealing lip is pressed against the rotating shaft surface by spring tension, creating a dynamic seal. Its core function is to prevent lubricating grease from leaking out of the hub while blocking water, mud, dust, and other external contaminants from entering the wheel bearing cavity. This is an Inner Seal designed to work in conjunction with the Outer Seal (MB308966).
- Hub Oil Leak — Visible grease seepage around the inner hub or brake components (worn or aged sealing lip)
- Bearing Noise — Humming or growling noises from the rear wheel while driving (grease loss causing bearing dry running)
- Reduced Braking Performance — Grease contamination on brake drums/discs causing degraded braking
- Overheated Hub — Hub temperature significantly higher than normal after driving (bearing overheating due to poor lubrication)
- Contaminant Ingress — Mud, sand, or moisture found in bearings when disassembling the hub (failed seal)
- Installation Success Rate: 98.5% direct fitment rate — confirmed across 189 repair orders (Jan 2024 - Jun 2025)
- Oil Seal Dimensions: 85mm (ID) × 127mm (OD) × 13mm (Thickness) — exact match for Mitsubishi Fuso Canter rear hub specifications
- Material: NBR (Nitrile Butadiene Rubber) + Metal casing — excellent oil resistance, heat resistance, and wear resistance
- Design Feature: Spring-loaded sealing lip — ensures consistent sealing pressure
- Vehicle Fitment: Mitsubishi Fuso Canter FE635, FE85D (E3/E4), 4M50 engine models
- Brand Cross-Reference: IZUMI, MUSASHI (F4219), Yamasida, ZEVS
- OE Interchange: MB308965 interchangeable with MUSASHI F4219, 034219
- 100% Factory Tested: Every oil seal undergoes dimensional accuracy, seal integrity, and material integrity inspection
- Warranty: 12 months
| Brand | Model | Chassis/Model | Engine | Notes |
|---|---|---|---|---|
| Mitsubishi Fuso | Canter | FE635 | -- | Primary fitment |
| Mitsubishi Fuso | Canter | FE85D (E3/E4) | 4M50 | Primary fitment |
| Mitsubishi Fuso | Canter | RUS | -- | Primary fitment |
- This is a REAR HUB INNER OIL SEAL (Inner Seal) — NOT interchangeable with the Outer Seal (MB308966)
- Confirm oil seal dimensions are 85×127×13mm before installation
- Recommended to replace the wheel bearing and outer seal (MB308966) simultaneously when replacing the inner seal for complete sealing system performance
- Use special press tools during installation — do not hammer the oil seal, which may damage the casing and sealing lip
- Apply a small amount of grease to the sealing lip before installation to prevent dry start damage
- For 100% accurate fitment, please provide VIN (Chassis Number)
| QC Item | Verification Method | Standard |
|---|---|---|
| Inner Diameter (85mm) | Precision bore gauge | ±0.3mm tolerance |
| Outer Diameter (127mm) | Precision OD gauge | ±0.3mm tolerance |
| Thickness (13mm) | Precision gauge | ±0.3mm tolerance |
| Rubber Hardness | Hardness tester | Meets NBR rubber hardness standard |
| Sealing Lip Integrity | 100% visual inspection | No cracks, nicks, or deformation |
| Spring Tension | Spring tester | Meets design tension standard |
| Visual Inspection | 100% visual inspection | No bubbles, burrs, or surface defects |
Refer to workshop manual:
- Safety Prep: Park on level ground, chock wheels, lift and support vehicle
- Remove Wheel: Remove rear wheel tire and hub assembly
- Remove Old Oil Seal: Carefully remove old oil seal using special tools (do not damage hub bore)
- Clean Mounting Bore: Thoroughly clean hub oil seal mounting bore — remove old grease and debris
- Inspect Mounting Bore: Check for scoring, wear, or corrosion
- Install New Oil Seal: Use special press tools to press new oil seal into hub bore (do not hammer the seal)
- Apply Grease: Apply a small amount of grease to the sealing lip
- Install Hub: Reinstall hub assembly onto vehicle
- Fill Grease: Fill with specified amount of wheel bearing grease per workshop manual
- Road Test: Perform road test — confirm no noise, no leakage
| Item | Interval |
|---|---|
| Wheel Bearing Inspection | Every 20,000 km or 12 months |
| Oil Seal Inspection | When leakage or bearing noise is detected |
| Oil Seal Replacement | When leaks, seal aging is found, or must replace whenever hub is disassembled |
- Packaging: Neutral carton / Branded color box / Custom branded packaging
- Packaging Unit: 1 piece/box
- MOQ: Small quantities accepted
- Delivery Time: 15-20 days after deposit
- Target Customers: Truck parts wholesalers, repair chain stores, fleet purchasers, cross-border e-commerce sellers
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