GEAR BOX SEAL (50-80-12) HYUNDAI MITSUBISHI (VIN-00951)

A heavy-duty 50 × 80 × 12 radial oil seal intended for gearbox / transaxle shaft sealing (input/output / pinion / drive shaft locations). The 43119 family is used by Hyundai/Kia as transmission / transaxle oil seals; Mitsubishi listings show MB393684 as a rear-axle/spacer assembly in which related oil seals are fitted — so the 50×80×12 seal is commonly used in gearbox/differential assemblies across these OEMs.

Product description

Gearbox / Transmission Oil Seal — 50 × 80 × 12

Precision-moulded radial oil seal for gearbox, transaxle and final-drive applications. The seal features an engineered elastomer lip, a garter spring to maintain contact pressure, and a metal outer case for secure housing fit. Supplied to match OEM form, fit and function for Hyundai (43119 series) and compatible Mitsubishi assemblies where 50×80×12 sealing is specified.

Key specs

• Size: 50 mm (ID) × 80 mm (OD) × 12 mm (width)
• Type: Radial shaft oil seal (single or double lip variants available)
• Material: Nitrile (NBR) / optional FKM for high temp / chemical resistance
• Inner spring: Garter spring (metal) for constant lip pressure
• Outer case: Press-fit metal shell
• Typical uses: Gearbox input/output shafts, transaxle pinions, differential pinions, final-drive shafts

Benefits

• Positive oil retention under rotational and pressure load
• Resistance to oil additives, heat and ageing (material dependent)
• OEM-style fit to housings for secure installation
• Reduces risk of gearbox oil contamination and premature bearing/clutch wear

OEM references & applications

• Hyundai (43119 series): Hyundai parts catalogues and aftermarket suppliers list 43119… items as transmission / transaxle oil seals used across Hyundai / Kia models — the 43119 family is the correct OEM group for many manual transaxle seals. Before ordering, match the exact 43119-xxxx suffix to your model (the catalogue tool / VIN check is recommended).
• Mitsubishi (MB393684): MB393684 appears in Mitsubishi parts listings as a spacer set / rear-axle related assembly (Minicab / TownBox family and similar). Parts diagrams for these platforms show oil seals used in the rear-axle/differential pinion area — the 50×80×12 size is commonly used in such gearbox/differential locations on small Mitsu vans/trucks. Verify MB393684 assembly breakdown for the exact seal sub-part.

Note: I could not find a publicly indexed Hyundai page exactly naming 43119-3A000 (many 43119-3A0xx / 43119-390xx items exist). The 43119 family is established as the transaxle / gearbox oil-seal group — confirm the final 4 digits against your VIN or the OEM parts fiche.

Typical vehicle models (examples where 43119 family / similar transaxle seals appear)

These are representative groups — final fitment must be confirmed by part suffix, engine/transmission code or VIN.

• Hyundai / Kia: Accent, Elantra, Sonata, Tucson and other models using manual transaxles where 43119-series seals are listed. Confirm exact sub-part for model/year.
• Mitsubishi: Small commercial vans/trucks (Minicab, Town Box, Bravo series) — MB393684 appears in rear-axle/differential assemblies for these models, and related oil seals are used in pinion/diff locations. Confirm exact assembly breakdown for the seal.

Fitment & verification checklist

• Confirm dimensions — measure ID × OD × width on the old seal (50×80×12 exactly).
• Check OEM suffix — 43119 is a family; final four digits (e.g., 3A000 / 39030 / 3A011 etc.) determine exact application — verify against VIN or parts fiche.
• Inspect assembly BOM — for MB393684 (Mitsubishi) check the spacer/axle assembly breakdown to find the exact oil seal sub-item if MB393684 is a higher-level assembly.
• Decide material — NBR is standard; use FKM (Viton) if the application sees higher temps or aggressive fluids.
• Order option: single-lip (standard) or double-lip / TC (dust + oil) depending on exposure to contaminants.

Sourcing notes & recommended cross-references

• Metric 50×80×12 seals are widely manufactured (SKF, NOK, Musashi, various aftermarket OEMs). You can source genuine OEM 43119-series seals from Hyundai dealers or high-quality aftermarket equivalents with matching dimensions and lip profile.
• For Mitsubishi Minicab / TownBox / Bravo, use official parts diagram to cross-reference MB393684 assembly and order the correct internal seal code rather than only the spacer set number.

Short catalogue copy

Gearbox / Transmission Oil Seal — 50×80×12

Precision radial oil seal for gearbox/transaxle and differential applications. OEM-family matched for Hyundai 43119-series transaxle seals and compatible with Mitsubishi rear-axle assemblies where 50×80×12 sealing is specified. High-quality elastomer lip with garter spring and metal outer case — available in NBR (standard) or FKM (high-temp). Verify OEM suffix and vehicle VIN before ordering.

Sources & references

• Hyundai parts listings / transaxle seal (43119 family).
• Supplier / parts diagrams showing Mitsubishi MB393684 in rear-axle assembly (Minicab / TownBox).
• Generic 50×80×12 seal availability (industrial/manufacturers listings).