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INTERSTATE MCBEE

INTERSTATE-MCBEE M-3929028 CAMSHAFT GEAR 89-00 5.9L CUMMINS (AFTERMARKET REPLACEMENT)

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SKU:
MCBM-3929028
MPN:
M-3929028
Shipping:
Calculated at Checkout
$100.98
724-785-4022

Description

Interstate-McBee M-3929028 Camshaft Gear – Cummins B/ISB 3.9L & 5.9L

Heavy-duty 72-tooth steel camshaft gear engineered to OEM dimensions for Cummins B-Series engines. A high-value replacement for worn or damaged timing gears on 1989–2000 Dodge Ram 2500/3500 5.9L applications and many 3.9L 4BT and industrial B-series engines. Built for precise valve timing, long service life, and straightforward installation.

  • OEM-equivalent fit: Direct replacement for Cummins 3929028 (see cross-refs below).
  • Durable construction: Precision-cut steel gear for stable timing and reduced wear.
  • Value vs. OEM: Comparable performance at a fraction of genuine OEM pricing.
  • Quality you can trust: From Interstate-McBee, a leading name in heavy-duty diesel parts.

Specifications

Part Number M-3929028 (Interstate-McBee)
OEM Reference 3929028 (Cummins)
Additional Cross-References 3912884, 3929030, 3907431, 3902235
Tooth Count 72
Material Steel
Position Camshaft gear (timing drive)

What’s Included

  • (1) Camshaft gear, 72-tooth steel

Vehicle Fitment

Verify by engine serial number (ESN) when possible.

  • Dodge Ram 2500/3500 5.9L Cummins
    • 1989–1993 12-Valve 6BT
    • 1994–1998 12-Valve 6BT (P-pump)
    • 1998.5–2000 24-Valve ISB
  • Industrial/Commercial: Cummins 4BT 3.9L and other B/ISB/QSB series applications (varies by ESN).

Install Notes

  • Lock and mark timing before disassembly; align timing marks on reassembly.
  • Clean and inspect mating surfaces; replace related seals as needed.
  • Follow the Cummins service manual for torque values and procedures.

Warranty

Interstate-McBee new engine parts carry manufacturer warranty coverage. Valve-train categories may have different terms. Refer to manufacturer policy or contact us to confirm coverage for this cam gear.

Cross-Reference & Compatibility

Fits select Cummins B / ISB / QSB series engines. Cross-refs: 3929028, 3912884, 3929030, 3907431, 3902235.

Why Buy From CPP Diesel

  • Curated B-series inventory with tech-backed fitment support
  • Fast shipping and hassle-free returns
  • Real diesel experts—call or message for ESN-verified compatibility

FAQ

Will this gear fit both 12-valve (6BT) and 24-valve (ISB) 5.9L engines?
Yes—this camshaft gear is listed for 1989–2000 Dodge Ram 5.9L B-series applications, which include 12-valve (1989–1998) and early 24-valve ISB (1998.5–2000). Always verify by ESN for edge-case builds.
Does it work on 3.9L 4BT engines?
It is commonly used on 4BT (3.9L) B-series engines in various industrial and commercial platforms. Confirm by ESN.
How does this compare to a genuine Cummins gear?
Interstate-McBee builds to OEM-equivalent specs for form, fit, and function at significant cost savings versus genuine OEM. If you need an OEM-boxed part, a Cummins 3929028 gear is available separately.
What is the tooth count and material?
72 teeth; precision-machined steel.
Any special torque specs?
Use the Cummins service manual for model-specific torque values and procedures. We recommend new fasteners where specified.
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Additional Information

YEAR:
1989-2000
MAKE:
DODGE
ENGINE:
5.9L
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