Product Description
The reliability of a heavy-duty transmission is only as strong as its seals. Nanjing Dingguan Auto Parts Co., Ltd. manufactures this essential Second Shaft Oil Seal, part number J90-1701181-1, the first line of defense for Fast Gear (法士特) transmissions in King Long, Higer, and Yutong buses.
This precision-engineered seal is responsible for one critical task: keeping transmission fluid in and contaminants out. A failing seal can lead to a slow leak that, if unnoticed, results in low fluid levels, poor lubrication, and ultimately, catastrophic damage to gears and bearings—leading to costly transmission rebuilds and extensive vehicle downtime.
Key Features & Benefits:
- Prevents Costly Leaks: Our seal’s precision-engineered sealing lip provides a tight, reliable barrier against fluid loss, ensuring your transmission remains properly lubricated.
- Superior Material: Crafted from a high-grade, temperature- and oil-resistant elastomer, this seal is designed to withstand the harsh internal environment of a commercial gearbox, resisting hardening and cracking for a long service life.
- Perfect OEM-Standard Fit: Engineered as a direct replacement for J90-1701181-1, it guarantees a perfect fit for a leak-proof installation in Fast Gear transmissions.
- Protects Internal Components: By preventing dust, dirt, and moisture from entering the transmission, it safeguards sensitive gears and bearings from abrasive wear.
As a specialized manufacturer, Nanjing Dingguan is committed to providing powertrain components that protect your investment.
Contact us today to request a quote and secure the heart of your fleet’s powertrain.
specification
| Product Name: | oil seal | Part Number; | J90-1701181-1 |
| Quality control: | ISO 9001 | Size: | 100*120*18(mm) |
| Type: | seal | Place of origin: | Nanjing, China |
| material: | fluororubber | Packaging: | Paper packaging/custom packaging |
| Minimum order quantity: | 1 | Application: | bus |
| Status: | brand new | Cargo transportation: | TNT, EMS, UPS, FedEx, DHL or according to your requirements. |
| Customs code: | J90-1701181-1 | Factory quality inspection: | 100% inspection |
Product detailed pictures

How to buy the right bus accessories
| 1.Please provide VIN number |
| 2.Please provide clear photos |
| 3.Please provide the OEM number |
| 4.lf you are unsure, please contact us. |

Nanjing Dingguan Auto Parts Co., Ltd.
-- Your reliable partner for bus spare parts.
About Us
Nanjing Dingguan Automotive Parts Co., Ltd. specializes in providing high-quality and cost-effective parts for buses and commercial vehicles. We focus on the global market, have rich experience in exporting bus and truck parts, provide services to distributors and fleet operators, and provide tailor-made solutions to meet different needs.
Warehouse and cargo display

About shipping and packaging
| transportation | TNT, EMS, UPS, FedEx, DHL or as per your requirement. |
| packaging | Bubble wrap, cartons, wooden boxes, and pallets are used to avoid damage to goods caused by bumps. |
common problem
| 1: Can you provide an accurate price? |
| Sure. You need to provide the vehicle VIN number, provide the product OEM code, or provide a clear product photo. |
| 2: What's your minimum order quantity? |
| No minimum order quantity, of course, if you buy more items from our company, you can get preferential prices and discounts. |
| 3: What's the delivery time? |
| Air freight orders take 5 to 8 days. Sea freight orders take 15 to 25 days. |
My advantage
| 1:High-Quality Bus Components |
| Specialized in premium aftermarket bus parts including engines,transmissions, and braking systems, built for durability and performance. |
| 2:Comprehensive spare parts solution |
| We offer a full range of bus accessories: filters, suspension components, electrical components, and interior accessories for all major bus brands. |
| 3: ISO-Certified Manufacturing |
| Our ISO 9001/TS 16949-certified products ensure strict quality control, reliability, and compliance with international standards.ISO |
| 4: Global Bus Part Coverage |
| Our products are compatible with leading bus models from Europe, Asia, and the Americas. |
| 5;Extensive product catalog |
| Engine parts, HVAC systems, lighting, wheels and safety components covering city, intercity and long-distance buses. |
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