The BW1372 / BW4472 Transfer Case (Borg‑Warner) transfer case is a chain‑driven, aluminum‑cased, all-wheel-drive (AWD) manual shift unit commonly paired with GM vehicles from the early‑to‑late 1990s, including:

Chevrolet Astro or GMC Safari AWD (1990–1998),
Oldsmobile Bravada (1991–1997),
GMC Syclone (1991–1992) and Typhoon (1992–1993)

The BW1372 / BW4472 Transfer Case is essentially the same internals housed in a slightly different casting, appearing on similar models (notably late‑1990s Astro, Safari, Jimmy) and often interchangeable with the BW1372 / BW4472 Transfer Case

Ideal for rebuilding, repairing, or replacing existing units, these transfer cases are sought after by restoration and parts hunters alike.

Condition & History

Original / New Old Stock Rear Half: Available on listing shows a rear half assembly (Part #1372‑565‑001) in “New other” condition (unused but missing original packaging) for around US $175
Remanufactured Complete Assembly (BW1372 / BW4472 Transfer Case): US Powertrain offers a fully remanufactured BW1372 / BW4472 Transfer Case for US $1,095, including OE-grade components (Timken/Koyo bearings, new BorgWarner chain), inspection, spin‑testing, and a 24‑month / 24,000‑mile warranty
Rebuild Kits (bearings, gaskets, seals): TPD Pro‑Line offers the BW1372 / BW4472 Transfer Case (includes adapter gasket, seals for input/front/rear outputs, premium bearings, thrust washers, etc.) for US $88.77 (discounted from $99.95), with worldwide shipping
Bearing & Seal Kit (USA Standard Gear ZTBK1372): Around US $161–177, includes bearings, seals, gaskets for a full tear‑down rebuild

Why It Matters

Owners commonly face issues like worn chains, leaky seals, or bearing wear. Repairing or rebuilding is often more cost‑effective than a replacement:

Buyer’s Guide & Suggestions

Identify Your Exact Model & Condition

Check the metallic tin tag on the case typically located on the rear bolt area to confirm whether you have a BW1372 / BW4472 Transfer Case

Choose Between Options Based on Budget and Skill

Option	Pros	Cons
Used Rear Half (~$175)	Lower cost, original OEM	Only one side; likely requires other parts
Rebuild Kit (~$90–160)	Affordable, complete internals refresh	Requires mechanical skill and tools
Remanufactured Complete Case (~$1,095)	Turn‑key solution, warranty-backed	Higher cost
DIY Full Rebuild	Cheapest path if DIY-savvy	Labor-intensive, tools required

Local Sourcing vs Online Purchase

If available, sourcing locally or regionally might save on cost and shipping delay.

Tools & Resources for Rebuild

Snap‑ring pliers (oversized), basic hand tools, cleaning solvents, RTV sealant, torque specs.
Many YouTube tutorials are available to guide novices through the rebuild process.

Shipping & Import Notes

If purchasing overseas, always inspect shipping costs, customs duties, and return policies closely.
Sellers like US Powertrain provide flat‑rate shipping and warranties but are U.S.‑based

Sample Ad Description (~1500 words style) — Condensed

For Sale: BW1372 / BW4472 Transfer Case Choice of Used Part, Rebuild Kit, or Fully Remanufactured

Overview:
Whether you’re restoring a Chevy Astro, GMC Safari, Oldsmobile Bravada, or turbocharged GMC Syclone/Typhoon, here’s your one-stop opportunity to secure the proper Borg‑Warner BW1372 / BW4472 Transfer Case unit. Available as a bargain used rear half, comprehensive rebuild kit, or fully remanufactured AWD-ready assembly.

Options:

Used OEM Rear Case Half (Part 1372‑565‑001)
- Condition: “New Other” (unused but packaging may be incomplete)
- Price: approx. US $175
- Ideal for complementing a parted-out build or replacing a damaged half.
TPD Pro‑Line Rebuild Kit (BW1372 / BW4472 Transfer Case)
- Includes: Adapter gasket, all seals (input, output, yoke), premium bearings, thrust washers, plus 12-month warranty
- Price: US $88.77 (discounted)
- Great for DIYers—a cost-effective path to like-new internals.
USA Standard Gear Bearing/Seal Kit (ZTBK1372)
- OEM-quality kit, bearings and seals included, made in USA
- Price: approx US $160
- A solid mid-tier rebuild option with high component quality.
Fully Remanufactured BW1372 / BW4472 Transfer Case (US Powertrain)
- Factory rebuilt with a new Borg‑Warner chain, OE-grade bearings, 3-step testing—backed by 24-month / 24,000-mile warranty
- Price: US $1,095 + $600 core deposit
- Turn-key, reliable, and excellent for those not wanting to mess with rebuilds.

Why Choose This Transfer Case?

Fits 1990–1998 Astro/Safari AWD, 1991–1997 Bravada, 1991–1992 Syclone, 1992–1993 Typhoon.
Proven, durable chain‑driven design with readily available parts and rebuild support.

DIY & Community Insights:

Shipping & Warranty:

US Powertrain ships fast within U.S., includes warranty—but factor in international shipping and customs.
Kits and parts ship worldwide, with free shipping often included in the U.S. ($150+ qualifies in some cases).

How to Order:

Specify whether you need the rear half only, a rebuild kit, or a full remanufactured case.
Provide your vehicle model/year and existing tag info to ensure fitment.
Ask about shipping and warranty terms—especially for international buyers.

Summary

Budget-Friendly DIY: Start with the BW1372 / BW4472 Transfer Case(~US $89) or USA Standard kit (~US $160).
Middle‑Ground: Secure a used rear half (~US $175) if you already have one side.
No-Fuss Option: Opt for the fully remanufactured transfer case (~US $1,095 + core deposit) — let someone else do the work.
Fitment Tip: Confirm BW1372 / BW4472 Transfer Case via case tag; both share interchange parts and application range.

Let me know if you’d like help sourcing shipping quotes to Canada, checking compatibility with your specific vehicle, or locating installation guides or tools!

Technical specifications
Installation notes
Common problems and fixes
Differences between BW1372 and BW4472
FAQs for buyers

Technical Specifications BW1372 / BW4472 Transfer Case

Specification	Details
Manufacturer	BorgWarner
Model Numbers	BW1372, BW4472
Type	Chain-driven, full-time AWD
Torque Split	35/65 front/rear (nominal), non-adjustable
Case Material	Cast aluminum
Lubrication	ATF (Dexron III recommended)
Shift Type	Automatic (viscous coupling), full-time AWD — no 2WD/4WD selection
Input Spline Count	Typically 27 or 32 (varies with model)
Output	Front and rear slip-yoke or fixed-yoke (application dependent)
Chain Type	Morse Hy-Vo (OEM spec)
Weight (approx.)	65–70 lbs (30–32 kg)
Compatible Vehicles	See list below

Vehicle Fitment Guide

Here’s where you’ll typically find the BW1372 / BW4472 Transfer Case;

BW4472:

1991–1992 GMC Syclone
1992–1993 GMC Typhoon
1991–1997 Oldsmobile Bravada
1990–1998 Chevrolet Astro AWD
1990–1998 GMC Safari AWD

BW1372:

1996–1998 GMC Jimmy
1996–1998 Chevrolet Blazer
1996–1997 Oldsmobile Bravada
1997–1998 Chevrolet Astro AWD (in later years)
1997–1998 GMC Safari AWD

Installation Tips

Installing a transfer case is a moderate to advanced mechanical task. It usually takes 3–5 hours with proper tools and a lift or jack stands.

Required Tools:

Transmission jack or floor jack
Socket set and torque wrench
Snap ring pliers
Pry bar (for separating old case from adapter)
ATF (Dexron III), approx. 2–3 quarts
RTV silicone sealant (if opening case)

Steps (Generalized):

Disconnect battery
Drain old fluid
Remove driveshafts (mark orientation to avoid vibration)
Support and unbolt old transfer case
Install replacement unit, ensuring correct alignment
Reconnect driveshafts, refill with fluid, test run

Common Issues with BW1372 / BW4472 Transfer Case

These transfer cases are reliable, but age and mileage bring wear. Common problems include:

Stretched Chain

Symptoms: Clunking noise, poor engagement, “slip” feeling under load.
Fix: Replace chain (~US $90–120 OEM). Avoid cheaper aftermarket chains — they stretch quickly.

Worn Bearings / Noisy Operation

Symptoms: Whining, grinding, vibration.
Fix: Full rebuild using quality bearings (e.g., Koyo/Timken/NSK).

Viscous Coupler Failure

Symptoms: Driveline binding in turns, front/rear axle not engaging smoothly.
Fix: Replacement is best — the coupler is usually sealed and not rebuildable. Some aftermarket rebuilds avoid this failure by using open-diff-like setups or upgraded LSDs.

Leaky Seals / Fluid Loss

Symptoms: Wet casing, low fluid, overheating.
Fix: Replace front/rear output seals — included in most rebuild kits.

Differences: BW1372 / BW4472 Transfer Case

Aspect	BW1372	BW4472
Primary Use	Later GM AWD SUVs	Early GM AWD vans and performance trucks
Case Design	Slightly different external casting	Standard BorgWarner AWD housing
Internal Parts	Mostly identical (same chain, seals, etc.)	Mostly identical
Tag Number Prefix	1372-XXX	4472-XXX
Swappability	Yes, with spline/input match	Yes, with spline/input match

In most cases, if the input/output shafts and spline count match, you can swap a BW1372 / BW4472 Transfer Case interchangeably. Always check the tag number.

FAQs Buyer Questions Answered

Q: Is this transfer case full-time AWD or selectable 4WD?

A: Full-time AWD. There’s no switch it’s always active and relies on the viscous coupler for torque distribution.

Q: Can I install this on a 2WD Astro/Safari?

A: No. Your 2WD chassis lacks the necessary front differential, front driveshaft, and front suspension configuration. You’d need a full AWD drivetrain conversion.

Q: Can I rebuild this transfer case myself?

A: Yes many experienced DIYers rebuild these units. All necessary rebuild kits are available, and tutorials exist. Be cautious with internal snap rings and tolerances.

Q: Can I use BW1372 / BW4472 Transfer Case parts interchangeably?

A: Most internal parts yes. Outer case halves and shaft splines may differ slightly. Confirm your spline count and case tag number.

Q: What fluid does it use?

A: Dexron III ATF. Many synthetic Dex/Merc variants also work well.

Optional Upgrades

Upgraded chain (Morse / Borg-Warner OEM): Lasts longer, resists stretch
Performance viscous coupler: Tighter torque bias, better handling
Aluminum rear cover upgrade: Prevents cracking under load

Shipping & International Buyers

From the U.S. to Cameroon or Abroad:

Expect to pay $150–400 shipping depending on the service and weight.
Consider freight consolidators or shipping via third-party logistics like MyUS or Shop&Ship if buying multiple items.
Inquire about customs/duty costs — most countries treat drivetrain parts as taxable imports.

Some retailers (like US Powertrain or TPD) do not offer international shipping directly, so you may need a freight forwarding service.

Pricing Recap

Product	Price (USD)	Source
Rear Case Half (used, NOS)	$175	Budsautoparts
TPD Rebuild Kit (BK1372)	$88.77 (sale)	TPD
USA Std. Bearing Kit (ZTBK1372)	$160–177	CSP Racing, others
Complete Reman Transfer Case	$1,095 + $600 core	US Powertrain
OEM Chain (Morse / BorgWarner)	$80–120	Online (eBay, RockAuto)

Where to Buy

1. Best price on rebuild kits, ships worldwide

2.Complete reman transfer case, quality guarantee

3. Used OEM rear case half, other rebuild kits and rare parts

4.Premium USA-made bearing and seal kit

Final Recommendation

If you’re a mechanic or restorer, the BW1372 / BW4472 Transfer Case is a well-supported, rebuildable, and durable component — whether you’re upgrading, repairing, or restoring an AWD GM vehicle.

BW1372 / BW4472 Transfer Case