DiigParr Doser Injector 4394644 Compatible with Cummins Engine B4.5 D4.0 F3.8 F4.5

Replace Part Number: 4394644, 0444B05704
Fit For Cummins Engine:B4.5 CM2350 B146C, B4.5 CM2620 B158B, B4.5 CM2620 B180B, D4.0 CM2620 D103B,D4.5 CM2620 D104B, F3.8 CM2350 F128C, F3.8 CM2620 F137B, F4.5 CM2620 F139B

Condition: New

• DiigParr Doser Injector 4394644 delivers precision fuel injection for Cummins engines, engineered to meet OEM specifications for B4.5, D4.0, F3.8, and F4.5 models.
• This component ensures optimal combustion efficiency, reduced emissions, and consistent engine performance across demanding applications.
• Built with durable materials to withstand high-pressure injection cycles, it maintains reliable operation in both standard and heavy-duty environments.
• Direct compatibility eliminates guesswork during installation, making it an ideal replacement for worn or damaged injectors.
• Trust this proven injector to restore your engine's power and fuel economy.

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.