Dana Spicer 512892 Air Lockout Repair Kit
The Dana Spicer 512892 Air Lockout Repair Kit is a genuine Spicer service kit used to repair the air-operated inter-axle differential lockout mechanism on select Dana heavy-duty tandem drive axles. Dana lists the 512892 for D170 and D190 Series applications, where it restores the piston-and-cover components responsible for pneumatically engaging and disengaging the lockout system.
The air lockout assembly is an important part of the tandem axle power divider system. When air pressure is applied, the lockout piston moves the shift mechanism to lock the inter-axle differential, helping distribute torque between the forward and rear drive axles when additional traction is required. A leaking or damaged piston, O-ring, or cover can prevent the lockout from engaging correctly or cause air loss.
Kit Contents
Dana parts literature identifies the 512892 kit as containing the primary air-lockout piston components:
- Piston – 131232
- Piston O-Ring – 210180
- Cover O-Ring – 131665
- Piston Cover – 131096
Product Specifications
- Manufacturer: Dana Spicer
- Part Number: 512892
- Product Type: Air Lockout Repair Kit
- Component Category: Differential / Inter-Axle Differential Lock
- Axle Series: D170 / D190
- Application: Heavy-duty tandem drive axle
- Country of Origin: USA
- Approximate Gross Weight: 0.410 lb.
- UPC: 023913164904
- VMRS: 022004113
Features & Benefits
- Genuine Dana Spicer service components
- Designed for Dana D170 and D190 tandem drive axles
- Repairs the pneumatic lockout piston assembly
- Helps restore reliable inter-axle differential lock engagement
- Replaces worn or leaking piston seals and lockout components
- Helps correct air leakage and lockout actuation problems
- OE-engineered for proper fit and dependable operation
- Convenient kit format eliminates the need to source individual lockout components separately
512892 vs. 512893
The 512892 is the basic air lockout repair kit. Dana also lists the related 512893 Air Lockout Repair Kit, which is a more complete version that additionally includes the shift fork components and is associated with D170 applications.
Updated 512892-A Version
Dana later revised the piston O-ring used in these lockout assemblies to improve durability. The revised O-ring uses FKM fluoroelastomer material, and Dana documentation identifies the corresponding updated kit as 512892-A. Therefore, depending on inventory and application, 512892-A may appear as the later service version of 512892.
Installation Note
Before ordering, confirm the axle identification tag and model. The 512892 is intended for compatible Dana Spicer D170/D190 tandem axle air-lockout assemblies and should not be assumed interchangeable with lockout kits used on other Dana axle families.
The Dana Spicer 512892 Air Lockout Repair Kit provides a genuine OE-quality solution for servicing a leaking, sticking, or malfunctioning inter-axle differential lockout without replacing the complete axle lockout mechanism.
