The Transfer Case BW4472 is a single-speed, chain-driven transfer case with a two-piece aluminum housing and a viscous coupling design. It’s commonly found in vehicles like the 1990–1998 Chevrolet Astro and Safari vans, 1991–1997 Oldsmobile Bravada, as well as GMC Syclone and Typhoon models . It typically features a 27‑spline rear output and mounts via a 4‑1/2″ front output circular yoke
If you’re exploring rebuild options, Allstate Gear offers parts like bearing kits ($106.94) and gasket/seal kits ($26.90) There are also aftermarket planetary gear sets available (e.g. from DiffsOnly) for around $200.40 plus availability lead-time
Where to Buy a Transfer Case BW4472 or Its Components
Used Components & Core Parts
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Front Case Half (used) – available at Cobra Transmission for $98.99
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Rear Case Half – “New Old Stock” (“NOS”) rear half listed at $175.00 on eBay
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Input Shaft (27 spline) – offered by TN Powertrain on eBay for just $59.00
Rebuilt/Remanufactured Units
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A fully Transfer Case BW4472 (1990–1995) is offered by Powertrain Company; price details are available upon inquiry
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A cross-compatible unit (BW1372/BW4472) is likewise available, with options for warranties and core fees, suited for similar vehicle models
Rebuild Kits and Components
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Bearing kit: ~$106.94
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Seal & gasket kit: ~$26.90
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Planetary kit: ~$200.40 on DiffsOnly, with ETA expected early June .
Summary Table: Price Highlights
| Item | Condition | Price | Notes |
|---|---|---|---|
| Input Shaft (27 spline) | Used | ~$59 | From TN Powertrain (eBay) |
| Front Case Half | Used | ~$98.99 | From Cobra Transmission |
| Rear Case Half (NOS) | New Old Stock | ~$175 | eBay listing |
| Bearing Kit | Aftermarket | ~$106.94 | Allstate Gear |
| Seal/Gasket Kit | Aftermarket | ~$26.90 | Allstate Gear & Precision International |
| Planetary Gear Set | Aftermarket | ~$200.40 | DiffsOnly |
| Remanufactured Transfer Case | Rebuilt | Inquiry-based | Powertrain Company |
Buying Tips
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Assess your needs: If you’re rebuilding piece by piece, kits and used components could be cost-effective. Needing quick replacement? A remanufactured or complete used unit might be best.
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Verify fitment: Ensure the part matches your vehicle’s model/year and uses BW4472, especially if compatibility spans with BW1372 .
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Consider shipping & warranty: Sellers like TN Powertrain and eBay sellers ship internationally, but remember to account for customs, duties, and return policies
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Core charge: Rebuilt units may require a core charge or return—check terms carefully
Quick Recap
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Best for the budget-conscious: Buy used parts (shaft, case halves), plus aftermarket rebuild kits.
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Best for convenience: Go with a remanufactured or rebuild exchange unit.
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Key parts and prices:
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Shaft: ~$59
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Front half: ~$99
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Rear half (NOS): ~$175
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Kits: Bearings ~$107, Seals ~$27, Planetary ~$200
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Additional Buying Options & Pricing Insights
