labwork TDC Timing Pin and Housing Kit for Cummins 5.9L 12V 4BT 6BT 6CT 3903924 3913994 3919683

Key Features：

• OEM Quality Standards: Built to strict quality standards using premium materials to ensure accurate timing alignment and long-lasting durability.

• Complete Assembly: Includes the timing pin body, mounting housing, and O-ring seal (3-piece kit exactly as pictured).

Reference Part Numbers：

• 3903924, 3913994, 3919683

Fitment & Application：

Compatible with a wide range of Cummins mechanical diesel engines across agricultural, commercial, and automotive applications:

• Cummins B Series (3.9L / 5.9L):

  • 4BT / 4BTA 3.9 (4-Cylinder)

  • 6BT / 6BTA 5.9 (6-Cylinder, 12-Valve)

  • Commonly found in Dodge Ram Pickups (1989–1998 models with 5.9L 12V engines).

• Cummins C Series (8.3L):

  • 6CT / 6CTA 8.3 (6-Cylinder)

• Other Extended Models:

  • ISC, ISL, and QSL Series engines (e.g., QSL-C220).

  • Commercial vehicles and heavy machinery equipped with Cummins B/C series engines.

Package Includes：

• 1 x Timing Pin

• 1 x Mounting Housing

• 1 x O-Ring Seal (Note: Product instruction manual is NOT included).

Installation & Preparation Guide：

1. Preparation

• Parts Verification: Confirm all 3 components (Pin, Housing, O-Ring) are present.

• Required Tools: Socket wrench (10mm or 13mm depending on housing bolts), torque wrench, clean rag, compressed air, and a small amount of oil-resistant grease.

• Safety First: Ensure the engine is completely shut off and cooled down. Disconnect the negative battery terminal to prevent accidental starting.

2. Brief Installation Steps

• Clean the mounting area on the engine gear cover thoroughly using compressed air and a clean rag.

• Lightly lubricate the O-ring and the shaft of the timing pin with a small amount of oil-resistant grease before assembly.

• Position the housing with the O-ring seated correctly, insert the timing pin, and secure the two mounting bolts to the factory torque specification.

⚠️ Important Buyer Notes：

• Fitment Verification: Compatible vehicles list is for reference only. Please physically verify your original part number or engine type before purchasing to ensure 100% compatibility.

It is the customer's responsibility to buy the right products. If you are not sure, please contact us in time.

Thank you for your cooperation.