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Camshaft Gear Compatible With Cummins 6C8.3/6Ct8.3/6Cta8.3 1985-2000 6Ct 8.3L Diesel (6C8.3) 84T

C3918777A1
OEM PART NUMBERS:
• Cummins: 3918777 (Primary OEM Camshaft Gear)
• Cummins: 3901967 (Alternate OEM)
• Cummins: 3907677 (Alternate OEM)
• Cummins: 3917328 (Alternate OEM)

SPECIFICATIONS:
• Teeth Count: 84
• Gear Type: Camshaft Gear
• Material: Steel
• Position: Camshaft
• Outer Diameter (mm): 222.25
• Mounting Style: Keyed
• Engine Family: 6CT
• Displacement: 8.3L
• Condition: New

APPLICATION:
• Compatible with Cummins 6C8.3/6CT8.3/6CTA8.3/ISC8.3 (1985-2000)
• Compatible with Case IH 4210/4230/5120/5130 (1985-2000)
• Compatible with Case IH 1666/1688 (1985-2000)

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Was: $553.84
Sale: $316.48
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Description

CUMMINS_INDUSTRIAL:
• Cummins 6C8.3/6CT8.3/6CTA8.3/ISC8.3 6CT 8.3L Diesel (1985-2000)
• Cummins QSC8.3 6CT 8.3L Diesel (1985-2000)

CASE_IH_TRACTORS:
• Case IH 4210/4230/5120/5130 6CT 8.3L Diesel (1985-2000)
• Case IH 5140/5150/7110/7120 6CT 8.3L Diesel (1985-2000)
• Case IH 7130/7140/8910/8920 6CT 8.3L Diesel (1985-2000)
• Case IH 8930/9170/9180/9210 6CT 8.3L Diesel (1985-2000)

CASE_IH_COMBINES:
• Case IH 1666/1688 6CT 8.3L Diesel (1985-2000)


IMPORTANT:
84-tooth camshaft gear for Cummins 6CT/6CTA/ISC/QSC 8.3L engines (222.25mm OD). Supersedes 3901967, 3907677, 3917328. This is the CAMSHAFT gear — do NOT confuse with the 42T crankshaft gear (3918776). The cam gear runs at half engine speed.

Used in Case IH tractors (4210-5250), Hyundai excavators, and various industrial/marine. A worn camshaft gear causes valve timing drift — symptoms include loss of power, increased exhaust temperature, and rough idle. Mark timing position before removal. Inspect the idler gear and crankshaft gear when replacing.

⚠️ Camshaft gear (84T). Crankshaft gear (42T) is 3918776 — different part.

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  • Item Requires Shipping
  • 9.3 lbs.
  • W10.0000” x H5.0000” x L10.0000”
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