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PRODUCT OVERVIEW
The Spicer SPI401 (also referenced as SPI-401) is Dana\'s complete Drive Axle Pinion Seal Installation Tool Driver Suitcase Kit, designed for professional service of Dana Spicer D-Series and R-Series tandem drive axles used in Class 6, 7, and 8 commercial trucks. The kit contains 11 axle seal installation tools and driver adapters covering the full range of supported Spicer drive axle models, along with a color-coded model and installation tip reference mat, all housed in a lightweight carrying case (case part number: 401CASE). Made in the USA and engineered to Dana OE specifications, the SPI401 ensures pinion seals are driven to the exact correct depth and alignment for every supported axle model — the first time, every time.WHY GENUINE SPICER SEAL INSTALLATION TOOLS MATTER
Installing a pinion seal without the correct OE driver is one of the most common causes of premature seal failure in heavy-duty axles. An undersized, oversized, or improvised driver can cock the seal during installation, nick the sealing lip, or seat the seal at the wrong depth — failures that are not immediately visible but produce axle oil leaks and eventual bearing contamination within thousands of miles of service. The SPI401 uses driver geometry engineered to match the exact bore and counterbore dimensions of each supported axle model, seating the seal flush, square, and at the depth specified in Dana service procedures. With over 20 years of Spicer drive axle models in the field, the included color-coded reference mat removes guesswork about which driver applies to which axle.KIT CONTENTS
11 Seal Installation Tools and Driver Adapters:
10021492 — Driver Adapter10021493 — Driver Adapter10021494 — Driver Adapter10021495 — Driver Adapter126917 — Axle Seal Tool128706HX — Seal Driver Adapter131471 — Axle Seal Tool131472 — Seal Driver Adapter210749 — Axle Seal Tool210750 — Axle Seal Tool210751 — Axle Seal Tool
1 Color-Coded Model and Installation Tip Reference Mat1 Lightweight Carrying Case (Part Number: 401CASE)
Note: A tools-only version (same 11 tools and mat, without the carrying case) is also available separately. The SPI401 includes the 401CASE carrying case.COMPATIBLE AXLE MODELS
The SPI401 covers the following Dana Spicer drive axle models:
Eaton-Heritage Models:RS404 | RSP40 | RD404 | RDP40 | DS402
Dana Single Reduction Models:D40-170 | D46-170 | D50-170 | D52-190 | D60-190 | D70-190
Dana Double Reduction Models:D52-590 | D60-590 (see Research Flag #1 — verify full list with Dana documentation)
Note: Always verify the axle model and serial number from the data plate on the axle centerline before selecting the installation tool from the kit. The included color-coded reference mat identifies the correct tool for each supported model.APPLICATIONS
The axle models covered by the SPI401 are found across a wide range of Class 6, 7, and 8 commercial truck applications including:
Linehaul and Regional Haul: Tandem drive axle configurations in over-the-road tractorsHeavy Haul: High-capacity vocational tandem setups rated up to 60,000+ lbs per axleVocational and Construction: Dump trucks, mixer trucks, cement trucks, heavy-duty construction equipment carriersLogging and Mining: High-torque, high-demand off-highway and severe-duty applicationsOil Field and Energy: Oilfield service trucks, water haulers, frac sand carriersRefuse: Rear-loader and side-loader refuse trucksSchool Bus and Transit: Medium and heavy-duty bus chassis
OEM truck platforms that have used these Dana Spicer axle families include Kenworth T680, T800, and W900; Peterbilt 579, 389, and 388; Freightliner Cascadia and 122SD; Volvo VNL series; Mack Anthem and Granite — among others. Verify the specific axle model on the data plate before service.
Technicians and fleet shops searching for a Spicer axle seal driver kit, Dana pinion seal installer, SPI-401, SPI401 tool kit, RS404 seal tool, D46-170 pinion seal driver, or D52-190 seal installation tool will find this kit provides the complete OE-specified tooling for the entire supported Spicer drive axle family.QUALITY AND CERTIFICATIONS
Designed and manufactured to Dana OE engineering standards. Dana\'s quality management system is certified to ISO 9001 and its environmental management system is certified to ISO 14001. Made in the USA.WARRANTY
12 months / 1 year from date of purchase. Some exceptions may apply — verify current warranty terms with your Dana distributor.ABOUT SPICER / DANA INCORPORATED
Dana Incorporated has been a leader in drivetrain engineering for commercial vehicles for over 115 years, headquartered in Maumee, Ohio. The Spicer brand encompasses drive axles, driveshafts, and related drivetrain components for heavy-duty trucks, buses, and off-highway vehicles worldwide. From the invention of the encased universal joint to today\'s advanced e-propulsion axle systems, Spicer components are specified by Class 8 OEMs and trusted by fleet operators and service technicians across North America and globally.
