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01. PRODUCT OVERVIEW
Reliable Damping for Safer, More Stable Driving
02.PRODUCT SPECIFICATIONS
TECHNICAL DATA FOR ACCURATE FITMENT
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| Item | Details |
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| Brand | Hosal |
| Main OE Number | 31316874373 |
| Reference Number |
31 31 6 874 373 / 31316874373/MGA-6088 32369821 32369822 |
| OE Manufacturer | BMW AG |
| Reference Type | BMW Genuine OE / OEM Number |
| Previous OE Numbers | 31316791553 / 31316873803 |
| Cross Reference | Bilstein B4 22-238269; Bilstein B6 35-264583 (performance alternative, different damping) |
| Bilstein Reference | 22-238269 — B4 Front Left |
| Bilstein B6 Reference | 35-264583 — Monotube performance alternative |
| KYB Reference | To Be Confirmed |
| TOKICO Reference | To Be Confirmed |
| SACHS Reference | Original-equipment supplier identified; exact aftermarket part number To Be Confirmed |
| Monroe Reference | To Be Confirmed |
| Gabriel Reference | To Be Confirmed |
| Paired Front Right OE | 31316874374 |
| Paired Front Right Previous OE | 31316791554 / 31316873804 |
| Paired Front Right Bilstein | 22-238276 — B4 |
| Product Type | Front Gas Shock Absorber / Suspension Strut |
| Vehicle Brand | BMW |
| Vehicle Application | BMW 3 Series F30 / F35 — selected xDrive models; F35 fitment requires VIN confirmation |
| Generation | BMW 3 Series Sixth Generation |
| Chassis / Model Code | F30 / F35 / F30 LCI / F35 LCI |
| Model Years | 2013–2018 selected catalog applications; exact OE fitment depends on VIN |
| Engine Application | 320i xDrive 2.0L N20; 328i xDrive 2.0L N20/N26; 328d xDrive 2.0L N47; additional versions verify VIN |
| Vehicle Type | Compact Executive Sedan / Long-Wheelbase Sedan |
| Brand Country | BMW — Germany / 德国 |
| Main Market | North America / Europe / China — application-dependent |
| Drive Type | xDrive AWD for directly verified F30 applications |
| Fitting Position | Front Axle Left |
| Side | Front Left / LH |
| Quantity per Vehicle | 1 pc Front Left |
| Shock Absorber Type | Gas Pressure — Bilstein B4 reference; Hosal technical specification To Be Confirmed |
| Shock Absorber System | Twin-Tube — Bilstein B4 reference |
| Shock Absorber Design | Front Suspension Strut |
| Upper Mount Type | Stem / Top Pin — Bilstein reference |
| Lower Mount Type | Base Cup / Bottom Plate — Bilstein reference |
| Extended Length | 492 mm — Bilstein 22-238269 reference |
| Compressed Length | 340 mm — Bilstein 22-238269 reference |
| Stroke Length | 152 mm — calculated from Bilstein reference lengths |
| Spring Included | No — bare suspension strut |
| Suspension Application | Non-Adaptive M Suspension; verify VIN and suspension option codes |
| Adaptive M Suspension | Not compatible with S2VFA / electronic adaptive suspension without separately approved conversion |
| M Sport Package | Compatibility requires VIN / suspension option verification |
| Quality Standard | OEM-equivalent quality |
| MOQ | 50 pcs per model |
| Warranty | 1 year or 40,000 km |
| Certification | ISO 9001 |
| Lead Time | 45–60 days |
| Packaging | Neutral or customized packaging available |
| Payment Terms | 30% deposit, 70% before shipment |
| Shipping Method | By sea, air or express |
| Port | Ningbo, China |
| Sample | Available |
| HS Code | 8708.80 |
| Country of Origin | China |
03. DAMPING PERFORMANCE CONTROLLED RESPONSE FOR EVERY ROAD CONDITION
Standard, comfort and heavy-duty damping settings are available according to different vehicle applications and market requirements.
04. MATERIALS & CONSTRUCTION BUILT FROM THE DETAILS UP
Carefully selected materials and precision components provide reliable sealing, stable damping performance and long-term durability.
CHROME-PLATEDPISTONROD
HIGH-STRENGTHSTEELTUBE
HIGH-PERFORMANCEOILSEAL
PRECISIONVALVESYSTEM
LOWFRICTION
STABLESTRUCTURE
LEAKPROTECTION
CONTROLLEDDAMPING
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05. BATCH CONSISTENCY From Approved Sample to Stable Bulk Supply
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SAMPLE CONFIRMATIONProduct dimensions, mounting points, damping requirements and appearance are confirmed before mass production. |
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FIRST ARTICLE INSPECTION The first finished unit is inspected before continuous batch production begins. |
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STANDARDIZED PRODUCTION Confirmed materials, components and production parameters are applied throughout the order. |
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BATCH IDENTIFICATION Product labels, batch codes and inspection records support order identification and repeat-order traceability. |
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COLOR BOX PACKAGING Approved packaging designs are applied consistently, including brand colors, product information and identification labels. |
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BATCH PACKAGING & PALLETIZING Finished color boxes are organized by batch and securely palletized for easier inventory management, handling and transportation. |
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06. PACKAGING & SHIPMENT FROM FACTORY PREPARATION TO CONTAINER LOADING
FREQUENTLY ASKED QUESTIONS
Find answers about shock absorber model matching, MOQ, customization, production, quality control, packaging and warranty.
1. HOW CAN I FIND THE CORRECT SHOCK ABSORBER?
Please provide the OE number, vehicle brand, model, year and installation position. Product photos, drawings or dimensions can also help us confirm the correct item.
2. WHAT IS YOUR MINIMUM ORDER QUANTITY?
Our standard MOQ is 50 pieces per model. Sample and trial order quantities can be discussed according to the specific product.
3. DO YOU SUPPORT OEM AND ODM CUSTOMIZATION?
Yes. We can customize the product logo, laser marking, labels, damping force, product color and packaging according to your market requirements.
4. CAN I ORDER SAMPLES BEFORE A BULK ORDER?
Yes. Samples are available for quality, dimensions and installation verification before bulk production.
5. WHAT IS THE PRODUCTION LEAD TIME?
The regular production lead time is approximately 45–60 days. The exact delivery time depends on the models, order quantity, materials and customization requirements.
6. HOW DO YOU CONTROL PRODUCT QUALITY?
Each shock absorber is inspected for appearance, dimensions, damping force and sealing performance before packaging to ensure stable batch quality.
7. WHAT PACKAGING OPTIONS ARE AVAILABLE?
We provide neutral packaging, protective bags, custom labels, laser marking, custom color boxes and reinforced export cartons.
8. WHAT IS THE PRODUCT WARRANTY?
Our shock absorbers are generally covered for one year or 40,000–50,000 kilometers under normal installation and use. Specific warranty terms depend on the product and order agreement.
