DiigParr Fuel Injection Pump 3916971 3916972 3921501 3917562 Fit for CASE 6T-590 Cummins 6BT 6BTA 5.9 Engine CASE 1088 888 9030B 9030 Excavator 850E 855E Tractor 621 Loader

Replace Part Number:3916971 3916972 3921501 3917562

Fit For CASE: 6T-590
Fit For Cummins: 6BT 6BTA 5.9

Fit For Engine CASE: 1088 888 9030B 9030
Fit For Excavator: 850E 855E

Fit For Tractor: 621

Condition: new, aftermarket

• Precision fuel injection pump engineered for heavy-duty diesel engines, specifically designed for CASE and Cummins 6BT/6BTA 5.9L applications.
• Compatible with multiple OEM part numbers (3916971, 3916972, 3921501, 3917562) and fits CASE excavators (850E, 855E), tractors (621), loaders (1088, 888, 9030B, 9030), and related equipment.
• Delivers reliable fuel atomization and injection timing critical for engine performance and efficiency.
• Direct replacement for original equipment, ensuring proper combustion and reduced emissions.
• Manufactured to OEM specifications for durability and longevity in demanding construction and agricultural environments.

Orders are delivered within 4–9 business days, including 1–2 business days for processing and 3–7 business days for shipping, depending on the destination and carrier.

We currently ship within the United States only.

Shipping Carriers
We ship via trusted carriers such as FedEx, DHL, and UPS.

Shipping Charges (USA Orders)

Orders over $299: Free shipping.

Orders $299 or below: Flat shipping fee of $28.99.

Return &Refund policy

We want you to be completely satisfied with your purchase. If for any reason you are not, you may request a return within 30 days from the date of delivery.

Return Conditions

• All returns require a Return Authorization Number (RAN), which you can obtain by contacting our customer service team.
• Items must be returned in their original condition and packaging.
• Returns must be shipped back within 30 days after the RAN is issued.
• Customers are responsible for return shipping costs unless the return is due to our error (e.g., incorrect or defective item).

Return Label

• Once your return request is approved, we will provide a return shipping label.
  
• The label can be downloaded and printed from the instructions sent to your email.
  
• The cost of return shipping is the customer’s responsibility, unless the return is due to our error (e.g., incorrect or defective item).

Restocking Fee

• A 10% restocking fee may apply to returns that are not the result of our error.

Defective or Damaged Items

• If your item arrives damaged or defective, please contact us immediately.
• Returned items will be inspected. If confirmed defective, we will, at our discretion:Replace the item at no cost, orIssue a full refund including shipping costs.
• If the item is found to be in working condition, the standard restocking fee may apply.

Non-Returnable Items

• Items damaged due to misuse, alteration, or improper handling cannot be returned or refunded.

How to Request a Return

To request a return, please contact our customer service team with:

• Order number
• Part number & product description
• Photos of the product and packaging
• Reason for return

Refund Processing

• Refunds are issued to the original payment method.
• Please allow 5–10 business days after we receive your return for processing.

Warranty: Our parts are covered for 6 months warranty without limitation on miles or hours of operation. Our parts are warranted on a parts-replacement-only basis. For more information, please view our warranty policy.