DiigParr Flywheel 3936822 3914433 Fits For Cummins ISB6.7 QSB5.9 QSB6.7 QSC8.3 4B3.9 Engine
Part Number: 3936822, 3914433, 3905829
Applications:
For Cummins Engine: 4B3.9, 6B5.9, 6C8.3, B4.5, ISB6.7 CM2250, ISB6.7 CM2350 B101, ISC CM2150, ISC8.3 CM2250, ISL9 CM2350 L101, QSB3.9 30 CM550, QSB5.9 44 CM550, QSB5.9 CM550, QSB6.7 CM850(CM2850), QSC8.3 CM850(CM2850), QSL9 CM850(CM2850), QSC8.3 CM554
Condition: new, aftermarket
- DiigParr Flywheel engineered for Cummins heavy-duty diesel engines including ISB6.7, QSB5.9, QSB6.7, QSC8.3, and 4B3.9 models.
- This precision-manufactured component delivers reliable power transmission and optimal engine performance.
- Built to OEM specifications with superior durability for demanding industrial and commercial applications.
- Direct fit replacement ensures seamless installation and consistent operation. Trust DiigParr for critical engine components that meet the highest standards of quality and reliability.
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.
