170x190x8.5mm Steering Knuckle Shaft Oil Seal OEM 0

170x190x8.5mm Steering Knuckle Shaft Oil Seal OEM 0059978447 | Brown NBR for Mercedes-Benz — main photo

170×190×8.5mm steering knuckle shaft oil seal, OEM cross reference 0059978447, made of premium brown NBR nitrile rubber with built in garter spring. Brand new high quality aftermarket replacement seal, specifically compatible with Mercedes Benz commercial vehicle steering knuckle systems. Direct interchangeable with original OEM dimensions, ideal for overseas auto parts distributors, Mercedes Benz repair workshops, fleet maintenance and cross border wholesale procurement.

Product photos

170x190x8.5mm Steering Knuckle Shaft Oil Seal OEM 0059978447 | Brown NBR for Mercedes-Benz — photo 2 170x190x8.5mm Steering Knuckle Shaft Oil Seal OEM 0059978447 | Brown NBR for Mercedes-Benz — photo 3 170x190x8.5mm Steering Knuckle Shaft Oil Seal OEM 0059978447 | Brown NBR for Mercedes-Benz — photo 4

Key specs: 内径 mm: 170 | 外径 mm: 190 | 高度 mm: 8.5 | 材料牌号: NBR | Size: ID 170mm × OD 190mm × Thickness 8.5mm | Material: Brown NBR nitrile rubber + Carbon steel garter spring | Structure: TC type double-lip skeleton seal | OEM Cross Reference: 0059978447

  • 内径 mm: 170
  • 外径 mm: 190
  • 高度 mm: 8.5
  • 材料牌号: NBR
  • Size: ID 170mm × OD 190mm × Thickness 8.5mm
  • Material: Brown NBR nitrile rubber + Carbon steel garter spring
  • Structure: TC type double-lip skeleton seal
  • OEM Cross Reference: 0059978447
  • Fitment: Mercedes-Benz steering knuckle shaft
  • Type: Aftermarket replacement part
  • Standard: ISO/TS 16949 compliant
  • Size: ID 170mm × OD 190mm × Thickness 8.5mm

Technical summary

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SpecValue
SizeID 170mm × OD 190mm × Thickness 8.5mm
MaterialBrown NBR nitrile rubber + Carbon steel garter spring
StructureTC type double-lip skeleton seal
OEM Cross Reference0059978447
FitmentMercedes-Benz steering knuckle shaft
TypeAftermarket replacement part
StandardISO/TS 16949 compliant

Pricing: request a quote (B2B / wholesale).

Request a quote · Inquiry · Request a sample

Product details

This 170×190×8.5mm TC type oil seal is a premium aftermarket replacement for Mercedes Benz steering knuckle shaft systems, with OEM cross reference number 0059978447. It adopts a double lip skeleton structure with precision machined primary sealing lip and auxiliary dust lip, paired with a built in high carbon steel garter spring to maintain stable radial preload under continuous steering operation and road vibration. It effectively retains chassis lubricant and steering gear oil inside the knuckle housing, and blocks external road dust, mud, grit and splash water from invading internal components to extend the service life of steering knuckle bearings and shafts. Manufactured under ISO/TS 16949 quality management system with strict dimensional tolerance control, it matches the original OEM size specification and can be directly installed without modification. We maintain stable bulk stock to support fast delivery and large volume procurement, serving global Mercedes Benz parts distributors and aftermarket repair channels. Core value for buyers Direct OEM size interchange, drop in replacement, reduces maintenance downtime Matches original equipment sealing performance for Mercedes Benz chassis Factory direct pricing, cost effective for bulk and scheduled procurement Stable quality consistency for batch replacement projects

Material and process

Material ：Premium grade brown NBR nitrile rubber, carbon steel garter spring, steel reinforcement skeleton Structure ：TC type double lip rotary shaft skeleton oil seal Hardness ：70±5 Shore A Key performance ：Oil resistant, wear resistant, dust proof, anti vibration, anti aging Working temperature range: 30℃ +120℃ Manufacturing process Integrated vulcanization molding, firm bonding between rubber and skeleton Precision grinding of sealing lip edge, uniform contact pressure with shaft surface 100% dimensional inspection for each batch before shipment Strict quality control per European commercial vehicle aftermarket part standards Upgrade option ：FKM fluoro rubber version available for higher temperature and chemically aggressive working conditions

Application and compatibility

Product Type ：Aftermarket TC type steering knuckle shaft oil seal for Mercedes Benz commercial vehicles Core dimensions ：ID 170mm × OD 190mm × Thickness 8.5mm OEM cross reference: 0059978447 Compatible fluids: Steering gear oil, chassis bearing grease, general transmission lubricants Fit applications Mercedes Benz heavy duty truck steering knuckle shaft sealing Commercial vehicle steering system housing sealing Same size chassis rotating shaft sealing applications Suitable for ：Mercedes Benz parts distributors, authorized repair workshops, fleet maintenance centers, cross border auto parts traders Buyer notice ：This is an aftermarket replacement part, not genuine OEM product. The OEM part number is provided for cross reference only. Please confirm shaft diameter, housing bore size and seal structure before ordering. Dimension mismatch will cause lubricant leakage after installation.

Selection guide

Selection Guide 1. Confirm OEM cross reference number 0059978447, and verify shaft ID 170mm, housing OD 190mm, thickness 8.5mm and TC double lip structure. 2. Standard NBR version for normal steering system operating conditions ( 30℃ 120℃); select FKM upgrade for high temperature and chemically aggressive environments. 3. For fleet long term scheduled procurement, contact us for exclusive bulk pricing and dedicated supply schedule. Installation Steps Surface Preparation Thoroughly clean the steering knuckle housing bore and shaft surface, remove old seal residue, carbon deposit, dirt and burrs. Pre lubrication Apply matching steering gear oil or bearing grease evenly on the sealing lip and shaft mating surface. Dry installation is strictly prohibited as it will cause premature lip wear and failure. Orientation Confirmation The main sealing lip faces the lubricant cavity side; the dust proof lip faces the external environment side. Reverse installation will cause oil leakage and loss of dust protection. Press fit Installation Use a dedicated press sleeve tool to press the seal in evenly and vertically. Never strike the rubber body directly to avoid seal deformation and lip tearing. Post installation Check Ensure the seal sits fully flush inside the housing bore without tilt or offset. Inspect the sealing lip for nicks, scratches and deformation. Function Test Manually rotate the steering knuckle shaft to confirm smooth rotation without abnormal binding resistance.

Packaging and delivery

Inner packaging ：Each piece individually packed in anti dust poly bag to protect the sealing lip from scratches and contamination. Outer packaging ：Standard export corrugated carton with shock proof padding. Custom packaging with private label available. Packing quantity ：Adjustable per bulk order requirements. MOQ ：No minimum order for stock items; sample orders supported for quality evaluation. Lead time Stock items ：Ship within 2 5 working days after payment Custom private label / packaging orders: 25 40 working days Large volume bulk orders: Lead time to be confirmed based on quantity Custom services ：OEM private label printing, custom packaging design, consolidated shipping for mixed SKUs Shipping terms ：EXW, FOB, CIF available Export documents ：Commercial invoice, packing list, certificate of origin, dimensional test report available on request

FAQ

How to submit an RFQ and get a quotation?

1) Open the inquiry page and enter company and contact details. 2) Provide model/size/quantity and duty conditions. 3) Note sample needs (intent=sample) when required. 4) Submit — we typically reply within 24 hours with an actionable quote and lead time. Final price and schedule follow the formal quotation.

What is your typical MOQ? Can you support small trial orders?

We support small trial lots for standard items. Production MOQ depends on tooling, material and process. Submit model/size/qty via the inquiry form for an actionable MOQ and lead time. Final price and schedule follow the formal quotation.

What are lead times for standard vs custom parts?

Stock/standard sizes are faster; custom dimensions, special materials or tooling take longer. Lead time depends on quantity and capacity—confirm via RFQ. Mark urgent needs in the inquiry notes.

I only have a competitor/OEM part number—can you cross-reference?

Yes. Provide the reference PN, key dimensions (ID/OD/height) and duty (media, temperature, pressure). We match equivalents in the catalog; use the Cross Reference page for keyword search. Final selection follows drawing and duty confirmation.

Which sealing materials do you use? How to choose for high temperature or special media?

Common materials include NBR, FKM/FPM, PTFE and silicone—matched to media, temperature and pressure. Share working temperature, media and motion type; we recommend a grade and note limits on the quote.

Do you support OEM/ODM, private packing and marking?

Yes—OEM/ODM from drawings/samples and agreed packing/marking. Share target market compliance needs and volume estimates; we confirm feasibility, tooling and production cadence at RFQ.

Do you export? What trade terms and payment methods are available?

We export to international buyers. Terms and payment (e.g. T/T) are confirmed during RFQ. Note destination port/country and preferred terms; formal contracts and PIs follow mutual confirmation.

What QC is done before shipment? Can you provide test reports?

Pre shipment dimensional/visual checks per order; material certificates or test reports available as agreed by product/lot. Specify document types and standards in the RFQ.

How do I request samples? How are sample and freight fees handled?

Use the inquiry form with sample intent, model/size and ship to address. Sample/freight waivers depend on item and partnership intent—confirmed by sales email. Provide full specs to avoid wrong shipments.

Does this seal cross reference OEM number 0059978447?

Yes, this is an aftermarket replacement seal with dimensions matching OEM 0059978447, direct drop in installation without modification.

Is this seal compatible with Mercedes-Benz?

Yes, it is specifically designed as a replacement for Mercedes Benz heavy duty truck steering knuckle shaft systems.

What is 170x190x8.5mm oil seal used for?

It is mainly used for commercial vehicle steering knuckle shaft housing sealing, retaining steering gear oil and bearing grease while blocking road dust and mud.

What material is this steering knuckle seal made of?

Made of premium grade brown NBR nitrile rubber with carbon steel garter spring and steel skeleton, hardness 70 Shore A, working temperature 30℃ to +120℃.

Is this OEM 0059978447 seal in stock?

Yes, we keep stable stock of this standard size. Stock orders can be shipped within 2 5 working days after payment.

What is your MOQ for bulk orders?

No minimum order quantity for stock items. Sample orders are supported for quality evaluation before bulk purchase.

What trade terms do you offer?

We offer EXW, FOB and CIF trade terms to support cross border procurement.

Can you provide private label service?

Yes, we provide private label printing and custom packaging services. MOQ for custom orders is 1000 pieces, lead time 25 40 working days.

Do you have a high temperature version of this seal?

Yes, we offer FKM fluoro rubber upgrade version for higher temperature and chemically aggressive working conditions.

What export documents can you provide?

We can provide commercial invoice, packing list, certificate of origin and quality test report to support customs clearance.

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