Inj Pump Gear Fits Cummins 6BT 1984-1998 Cummins B Series 4993971

Replaces Part Numbers & Specifications

OEM PART NUMBERS:
• Cummins: 4993971 (Fuel pump drive gear for VE pump equipped B series engines)
• Cummins: 3902236 (Cross-reference OEM number)
• Cummins: 3911331 (Cross-reference OEM number)
• Cummins: 3914912 (Cross-reference OEM number)
• Cummins: 3920593 (Cross-reference OEM number)
• Cummins: 3929032 (Cross-reference OEM number)

SPECIFICATIONS:
• Gear Type: Fuel Pump Drive Gear
• Position: Injection Pump
• Engine Family: Cummins B Series
• Condition: New

APPLICATION:
• Compatible with Cummins 4BT (1983-Present)
• Compatible with Cummins 6BT (1984-1998)
• Compatible with Case IH Tractors with 6BT (1985-1998)

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.

CUMMINS_4BT:
• Cummins 4BT 4BT 3.9L (1983-Present)

CUMMINS_6BT:
• Cummins 6BT 6BT 5.9L (1984-1998)

CASE_IH:
• Case IH Tractors with 6BT Cummins 6BT (1985-1998)


IMPORTANT:
Fuel pump drive gear for Cummins B-Series engines with VE PUMP (Bosch VE rotary distributor). Cross-refs: 3902236, 3911331, 3928177, 3991210. Do NOT confuse with 3931382 (72T P7100 pump gear) — the VE pump and P pump use DIFFERENT drive gears. This is the #1 ordering mistake.

Fits 4BT (3.9L) and 6BT (5.9L) with VE pump. Used in Dodge Ram (1989-1993), Case IH, and various industrial applications. The VE pump gear directly controls injection timing. Failure symptoms: hard starting, timing knock, white smoke, erratic idle. Mark original position before removal — VE pump timing is gear-mesh dependent.

⚠️ For VE pump ONLY. P pump gear is 3931382 — NOT interchangeable.

SHIPPING INFORMATION

SHIPPING TIME: Marine Parts Distributors is proud to offer free ground shipping to all customers having items shipped to addresses in the 48 contiguous states. Orders placed and paid by 4:00 PM EST will ship the same business day (excluding weekends and holidays which will ship next business day). Tracking information will be sent via e-mail by our shipping department. Delivery times can vary by location and shipping method. Typically, free shipping to the eastern US is estimated to be delivered in 1-2 business days, where deliveries to the western US (or most remote locations) may take up to 4-6 business days.

Items purchased with FREE SHIPPING & FLAT SHIPPING RATES only apply to US 48 CONTIGUOUS STATES and does NOT include APO/FPO/MPO (these areas are subject to a shipping surcharge). International Shipping, US Non-Continental shipping - which includes Alaska, Hawaii, Puerto Rico, US Territories and APO/FPO/MPO - all have 3-10 business day delivery times. Shipments will be delivered by UPS, FEDEX, or USPS and the carrier will be selected at our discretion. We also offer Expedited Shipping WORLDWIDE, including Saturday delivery (Saturday Delivery is an extra $15.00 and is not always available).

Please add your items to a cart to determine your shipping costs and rates. Please note that international orders may be subject to customs and duty fees; all international shipping costs are the responsibility of the customer.

Should you have any questions or concerns regarding shipping your item, please contact the customer service department 8AM-6PM EST Monday-Friday. You may also email any questions or concerns you have regarding shipping your item.

CANCELING ORDERS: In the event you need to cancel or change your order you may do so within 24 hours, provided your order has not been shipped, by contacting us through eBay's messaging center. Please make sure the Ship-To address you use during checkout is correct. All orders that are returned to sender or undeliverable are subject to a 20% return charge.

Marine Parts Distributors products, when properly installed, are warranted against defects in materials and workmanship to the original purchaser for a period of one (1) year from the date of purchase. Warranty does not cover failure due to accident, abuse, neglect or as the result of normal wear and tear. Improper installation, careless handling, tampering or disassembly in any way will void original factory warranty. Failures due to rust, submersions, deliberate abuse, broken gears, housings or components shall not be considered for warranty, nor products used in applications for which they were not intended.

The sole responsibility of Marine Parts Distributors - if any - shall be the replacement of defective products as stated above. This warranty being expressly in lieu of all other obligations or liabilities and Marine Parts Distributors neither assumes nor authorizes any other person or firm to assume for it any other liability in connection with the sale of its products or merchandise.

It is the responsibility of the customer to verify the correct application information prior to purchasing any product from Marine Parts Distributors. All purchases made in error, bought by mistake, no longer wanted, or returned to sender due to an incorrect address are subject to a 20% return charge and require a return authorization number. In these cases, the return shipping costs will also be deducted from the refund using our discounted shipping rates. Buyers are responsible for the shipping of any international orders.

BUYER IS RESPONSIBLE FOR ANY AND ALL SHIPPING CHARGES.

It is the responsibility of the customer to verify the correct application information prior to purchasing any product from MARINE PARTS DISTRIBUTORS. All purchases made in error are subject to a 20% return charge and require a return authorization number.

If an order must be canceled or changed, please contact the service department as soon as possible. Shipping times for orders are staggered throughout the day, depending on which carrier is shipping your order. Customers are notified via email when their item is on the loading dock ready to ship. Marine Parts Distributors reserves the right to apply a 20% return charge to orders canceled after the item has been packaged and taken to the shipping terminal. Please ensure that you have entered the correct shipping address at check out. It is the responsibility of customers to ensure they have provided the correct shipping address. If you need to specify a carrier to deliver your order to your address, please contact the customer service department before making a purchase.

BUYER IS RESPONSIBLE FOR ANY AND ALL SHIPPING CHARGES.