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Item #:
119651122
Speedway Motors Ford 9 Posi Differential 3rd Member Assembly, 28 Spline, 3.70 Gear Ratio, Nodular Iron Housing, Clutch-Style Limited Slip, Daytona
Item #:
119651122
TZS 3810492
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
QTY:
Order now and get it around Saturday, July 18
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The improvements continue with rugged billet steel adjuster nuts and heavy-duty keepers to ensure your ring gear settings are maintained.
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What Stands Out
Durable Construction
Crafted from nodular iron, this assembly offers enhanced durability and resistance to wear, ensuring long-lasting performance under demanding conditions.
Enhanced Traction
The clutch-style limited slip design provides superior traction control, improving handling and stability during acceleration, especially in high-performance applications.
Optimized Gear Ratio
With a 3.70 gear ratio, this assembly strikes the perfect balance of speed and torque, optimizing performance for various driving scenarios while catering to enthusiasts seeking power.
Product Details
- Hand-Assembled Precision: Built by expert technicians with precise backlash, preload, and pinion shim adjustments for optimal ring gear pattern and long-term reliability.
- Heavy-Duty Nodular Iron Housing: Reinforced casting with 4 lbs of extra material and billet adjuster nuts delivers superior strength over OEM “gray” iron units.
- Clutch-Style Limited Slip: Provides smooth, quiet operation with strong traction control—ideal for street and medium horsepower performance applications.
- Daytona Pinion Support Design: Features large bearings and a spacer-and-shim setup to maintain pinion depth and eliminate crush sleeve failures under high load.
- Built for Performance: Includes forged steel 1310 yoke, Viton high-temp seal, Grade 9 hardware, and reusable poly storage case—race-tested for proven durability.
Product Technical Details
| Manufacturer | Speedway Motors |
| Brand | Speedway Motors |
| Model | Speedway Motors |
| Item Weight | 87 pounds |
| Product Dimensions | 18 x 14.3 x 13.4 inches |
| Item model number | 91049345-28-370 |
| Exterior | Machined |
| Manufacturer Part Number | 91049345-28-370 |
| Position | Center |
What's in the box
Includes product as described
Who Should Buy?
-
Performance Enthusiasts
Ideal for car enthusiasts seeking enhanced traction and performance for high-speed driving and racing applications.
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Classic Car Builds
Perfect for restoring or upgrading classic Ford vehicles that require reliable and efficient rear-end assemblies.
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Track Racers
Designed for track racing where a clutch-style limited slip differential improves handling and stability during cornering.
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Everyday Drivers
Not suitable for daily drivers who prioritize comfort over performance and don’t require a high-performance differential.
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Budget Builders
May not be cost-effective for those on a tight budget as it is priced for high-performance applications.
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Non-Ford Vehicles
Compatibility issues arise for users with non-Ford vehicles, as the assembly is specifically designed for Ford applications.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What materials are used in the construction?
Answer: The product is made from durable nodular iron and cold-rolled 8620 steel for enhanced strength and wear resistance. -
Question:
How is the product assembled?
Answer: Each unit is hand-assembled by trained technicians to ensure exact specifications and quality control. -
Question:
Is this compatible with standard Ford applications?
Answer: Yes, it is specifically designed to be compatible with Ford 9-inch third members.
Speedway Motors Differential Assembly Kits 91049345-28-370 Editorial Review
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Customer Reviews & Ratings
6 customers ratings
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5 Star
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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“Accurate delivery timing given”
16 June 2026 · via Trustpilot
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“Not madly expensive like I thought, and much quicker than promised.”
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6/7/2026 · via Trustpilot
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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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TZS 3810492
Order now and get it around Saturday, July 18
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
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Fastest cross-border delivery
Features & Benefits
- Professionally hand-assembled for precision and quality.
- Constructed with tough nodular iron for enhanced durability.
- Features advanced engineering with extra ribbing and thick forged steel caps.
- Precision machined for a leak-proof, consistent gasket seal.
- Utilizes cold-rolled 8620 steel for long-lasting gear durability.
- Clutch-style positraction differential ensures quiet, reliable operation.
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