38x51/58x13/15 Oil Seal NBR | OEM M502-17-335A Transmission Extension Housing Seal
Model / SKU: M502-17-335A-3851581315-NBR
Aftermarket transmission extension housing oil seal OEM M502-17-335A, dimension 38×51/58×13/15 mm, NBR rubber. In stock, bulk discount available for auto repair & wholesale buyers; fast shipment for B2B orders. Send RFQ for pricing.
Tags: M502-17-335A oil seal, 38x51/58x13/15 oil seal, transmission extension housing seal, NBR auto oil seal, BT-50 transmission oil seal
Product photos
Key specs: Material: NBR | Material: NBR | Part Number: M502-17-335A, alternate XM347A292AA | Type: flanged transmission rear housing oil seal | specifications: 38×51/58×13/15 mm | Material: NBR | Part Number: M502-17-335A, alternate XM347A292AA | Type: flanged transmission rear housing oil seal
- Material: NBR
- Material: NBR
- Part Number: M502-17-335A, alternate XM347A292AA
- Type: flanged transmission rear housing oil seal
- specifications: 38×51/58×13/15 mm
- Material: NBR
- Part Number: M502-17-335A, alternate XM347A292AA
- Type: flanged transmission rear housing oil seal
- Size: 38×51/58×13/15 mm
Technical summary
Product specifications. Refer to the approved drawing for dimensional tolerances and installation requirements.
| Spec | Value |
|---|---|
| Material | NBR |
| Part Number | M502-17-335A, alternate XM347A292AA |
| Type | flanged transmission rear housing oil seal |
| Size | 38×51/58×13/15 mm |
Pricing: request a quote (B2B / wholesale).
MOQ / commerce notes: In stock, bulk discount available
Product details
This aftermarket flanged transmission extension housing oil seal OEM M502-17-335A has dimension 38×51/58×13/15 mm. Constructed with metal flange shell and spring-loaded NBR sealing lip, designed for manual transmission rear housing to retain gear oil and block external contaminants.
VKEFOT manufactures oil seals, O-rings and custom rubber seals in Xingtai and exports to Europe, North America, Middle East and Southeast Asia.
Features & Benefits
- Flanged metal outer shell for easy positioning and secure fitting inside transmission housing
- Spring energized primary lip maintains stable contact pressure on rotating shaft to prevent gear oil leakage
- NBR compound offers excellent resistance against mineral gear oil, good wear performance for auto transmission applications
- Integrated dust barrier protects sealing lip from road dirt, mud and splash water
- Ready stock, suitable for auto repair shops, spare parts wholesalers and MRO replacement
Factory production MOQ typically 100–5000 pcs, bulk discount available. Standard stock lead time runs 7–15 working days.
FKM material upgrade is available for higher temperature requirements, custom production lead time: 25–40 working days.
Material & Specs
- Sealing Lip：NBR (Nitrile Butadiene Rubber). Outer casing: painted stamped steel flange, stainless steel garter spring.
Typical NBR working temperature: -30°C ~ +120°C. FKM version can work -20°C ~ +200°C, confirm compound grade in RFQ. - Compatible media：mineral manual transmission gear oil, petroleum-based lubricants.
Applications & Compatibility
Replacement part for manual transmission extension housing seal, fits Mazda BT-50, Mazda 929 and compatible models with OEM# M502-17-335A / XM347A292AA.
This is aftermarket replacement seal. Verify OEM part number, shaft size and housing dimension before ordering.
Selection & Installation
Selection Tips
- Check dimension：ID 38 mm, OD 51 / 58 mm, widths 13 mm /15 mm, confirm OEM part number M502-17-335A and transmission type before purchase.
Installation Steps
- Clean shaft and housing bore, fully remove old seal residue, burrs and rust.
- Lightly lubricate main sealing lip with matched transmission gear oil, dry installation forbidden.
- Keep seal parallel to housing, press evenly only on metal flange with installation tool.
- Do not hit rubber lip directly, avoid lip damage.
- After fitting, rotate shaft manually to confirm free movement without binding.
Packaging & Delivery
Neutral PE bag + export carton; quantity per carton adjustable.
Stock items lead time:7–15 working days. Bulk orders enjoy volume discount.
Samples are available for quality inspection; sample freight cost confirmed via RFQ.
Custom logo marking and FKM compound orders take 25–40 working days.
Payment terms, inspection certificates and warranty available upon quotation.
Submit RFQ with OEM part number, quantity and destination country to get best bulk price.
FAQ
I only have a competitor/OEM part number—can you cross-reference?
Yes. Send the reference PN, ID×OD×height in mm, and duty (media, temperature, pressure, speed). We match equivalents in the catalog; the Cross Reference page also searches by keyword. Final selection follows drawing and duty confirmation — do not order from a photo alone.
Do you support OEM/ODM, private packing and marking?
Yes — OEM/ODM from drawings or samples, plus agreed packing and marking. Share target-market compliance needs and annual volume; RFQ confirms process, tooling cost and cadence. VKEFOT is the export brand of the Xingtai factory, not a trading desk.
TC vs TB oil seal: which should I specify?
For a rotary shaft that needs a dust lip plus oil lip, start with TC (rubber-covered dual-lip is common); TB is typical when a semi-metal case needs a stiffer bore fit. Shaft diameter, housing, runout and dust still decide. Send ID×OD×height in mm and speed on the RFQ — not only a competitor photo.
NBR vs FKM oil seal for hot engine oil?
Continuous engine-oil duty near 120°C or fuel exposure should be reviewed as FKM; general mineral oil at moderate temperature and cost-sensitive repair jobs often stay NBR. Brown color is not proof of FKM. The quote names the grade and temperature limit — do not order by color.
Oil seal vs O-ring: when do I use which?
Use a metal-cased radial shaft (skeleton) oil seal for rotating shafts; use an O-ring for static glands or reciprocating grooves. An O-ring on a rotary shaft wears out quickly. VKEFOT makes both — state motion type (rotary/static/reciprocating) and ID×OD×section on the RFQ.
Cassette seal vs dual-lip TC for dusty construction equipment?
Ag gearboxes and construction travel shafts with mud and long service intervals should be reviewed as cassette/combined seals; many automotive hub repair jobs stay dual-lip TC. Cassette packs are thicker and need different bore and axial space. A job-site photo is not enough — send ID×OD×height.
Xingtai oil seal factory vs trading company — how do I tell?
VKEFOT is the export brand of Xingtai Hanchi Intelligent Technology Co., Ltd. Mixing, vulcanization and outgoing inspection run in Xingtai, then goods export to Europe, North America, the Middle East and Southeast Asia. A trading desk usually cannot change compound or cut tooling. For OEM drawings, ask who runs the process and QC — not only catalog price.
What is a skeleton / radial shaft oil seal?
A skeleton oil seal is a metal-cased radial shaft seal: the rubber lip rides the shaft and the case holds interference in the bore. Common styles include TC, TB and TA. Minimum spec is ID×OD×height in mm, compound and duty. VKEFOT catalogs automotive and industrial shaft seals; trust the product-page dimensions.
What do ID, OD and height mean on an oil seal RFQ?
ID is inside diameter (shaft), OD is outside diameter (bore), height is axial width, all in millimetres. Missing any one blocks a cross-reference. Example: 56×112×8/10 means 56 mm ID, 112 mm OD, 8/10 mm height. Put those three numbers and the compound on the RFQ.
Which oil seal for an automotive wheel hub or differential pinion?
Hub repair jobs often use dual-lip TC; differential pinion shafts often need a secondary lip or split height (e.g. 8/10 or 12/22 mm). Use measured or OEM dimensions — not a marketplace title. VKEFOT application pages cover drivetrains and hubs; send an OEM number or ID×OD×height on the RFQ.
How to select oil seals for ag gearbox and PTO shafts?
Ag gearboxes and PTO shafts see dust and shock — prefer a dust lip or cassette, with NBR or FKM matched to gear oil and temperature. Do not force a passenger-car hub seal onto a PTO shaft. Send shaft, bore, height and whether mud/water is present, then RFQ.
What matters for pump, valve and compressor shaft seals?
Match media (oil, water, gas) and temperature first, then lip style and compound; do not default to cheap NBR for high speed or dry running. Put shaft runout and eccentricity on the RFQ. VKEFOT application cases include pumps, valves and compressors — still use measured sizes.
Does a brown oil seal mean it is FKM?
No. Brown NBR is common; color is not proof of FKM. For heat or fuel duty, write temperature and media on the RFQ so the factory names the grade. Ordering by color is a frequent cause of early leak.
Can you quote an oil seal from a photo only?
Not as a firm quote. We need at least ID×OD×height in mm, ideally compound and speed. A photo can show lip count and case style; it does not replace dimensions. Incomplete RFQs get a request for those three numbers before price.
If a new oil seal leaks quickly, is it always a bad seal?
Not always. Rough shaft finish, runout, cocked installation or the wrong compound also leak early. Check size and media/temperature match before blaming the part, then inspect the journal. Note time-to-fail (e.g. 50 hours) on the RFQ so we diagnose — do not just buy a cheaper seal.
What is needed for private-label OEM packing of oil seals?
Private packing and marking need annual volume, target-market compliance and artwork; tooling cost and cadence are confirmed on the RFQ — not a one-line “please OEM”. VKEFOT runs OEM/ODM after drawings or samples are complete.
Who is VKEFOT and how does it relate to Xingtai Hanchi?
VKEFOT manufactures oil seals, O-rings and custom rubber seals in Xingtai and exports to Europe, North America, Middle East and Southeast Asia. The manufacturer is Xingtai Hanchi Intelligent Technology Co., Ltd. Use this wording on quotes and certificates — do not invent alternate spellings of the brand.
What vehicles fit OEM M502-17-335A oil seal 38x51/58x13/15?
This aftermarket M502-17-335A flanged transmission oil seal fits Mazda BT-50 and related models. Cross reference part number XM347A292AA. Always verify OEM number, shaft and housing dimensions before ordering as a replacement seal.
What does M502-17-335A transmission extension housing oil seal do?
This 38x51/58x13/15 flanged oil seal installs on manual transmission extension housing. Its spring-loaded NBR lip retains gear oil inside the transmission and blocks road mud, dust and splash water to protect internal components.
What temperature range can NBR M502-17-335A oil seal withstand?
The NBR version works continuously from -30°C to +120°C. For high-temperature operating environments, FKM compound upgrade is available. Confirm working temperature and lubricant media on your RFQ.