Dana Spicer 322703 R170/S170 Axle Housing & Stud Assembly
The Dana Spicer 322703 Housing and Stud Assembly is a genuine Spicer heavy-duty axle housing designed for select Dana R170 and S170 drive axle applications. This complete service housing provides the structural foundation for the axle assembly, supporting the differential carrier, axle shafts, wheel-end components, and associated suspension mounting hardware.
Dana identifies the 322703 as a genuine Spicer medium- and heavy-duty axle component manufactured to OE specifications. Its heavy-duty construction, induction-hardened spindles, and precision-machined carrier mounting area are designed to maintain correct axle alignment and provide dependable support under demanding commercial truck and vocational service.
Technical Specifications
- Manufacturer: Dana Spicer
- Part Number: 322703
- Product Type: Axle Housing / Housing and Stud Assembly
- Axle Series: R170
- Applicable Family: R170 / S170
- Wall Thickness: 12.5 mm
- Overall Length: 2078 mm
- Box Section: 133 × 117 mm
- Bowl Offset: 66 mm
- Pilot Diameter: 171.45 mm
- Bolt Circle Diameter: 209.50 mm
- Hole Pattern: 15 + 1
- Hole Size: .656 + .812
- Index Angle: 22.5°
- Spindle Series: R
- Induction-Hardened Spindles: Yes
- Rolled-Over Design: No
- Gross Weight: Approximately 265 lb.
- Country of Origin: USA
- UPC: 023913350925
- VMRS: 022001001
R170 / S170 Service Application
Dana’s R170/S170 axle housing replacement chart identifies 322703 as the service-order housing for original production housing 323301. The chart specifies a 12.5 mm wall thickness, 2078 mm track-length configuration, and ABS blocks at the 0-degree location.
This makes the 322703 particularly useful when replacing a damaged, bent, cracked, or otherwise unserviceable original axle housing without replacing the complete axle assembly.
Features & Benefits
- Genuine Dana Spicer OE-quality heavy-duty axle component
- Designed for compatible R170/S170 axle assemblies
- Complete housing and stud assembly
- Heavy-duty 12.5 mm wall construction
- Induction-hardened spindles for increased durability
- Precision carrier pilot and bolt-circle dimensions
- Designed to maintain correct wheel-end and differential alignment
- Suitable for Class 8 truck, vocational, fleet, and heavy-duty axle repair
- Direct service replacement for applicable 323301 production housings
- Manufactured in the USA
Cross-References
- Dana / Spicer 322703
- Dana 323301 – original production housing serviced by 322703
- Capacity 909585
- Daimler Truck North America ETN 322703
- International / IHC ZBP0322703
- Navistar DS322703
- PACCAR 322703ETN
- McNeilus 1340818
- Peterbilt 1340818
- Volvo ETN322703
- Volvo SP322703
Application Note
Axle housings are highly configuration-specific. Similar R170/S170 housings can differ in wall thickness, track length, ABS block position, torque-rod brackets, hanger brackets, and other mounting features. Dana’s own replacement tables list numerous different R170/S170 housing configurations, so the original housing number and axle build information should be verified before ordering. The Dana Spicer 322703 Housing and Stud Assembly provides a genuine OE-engineered solution for rebuilding compatible R170/S170 heavy-duty drive axles where this specific 2078 mm, 12.5 mm-wall housing configuration is required.
