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The HKS Direct Deposit Remover Gasoline (DDR) is a high-performance fuel additive formulated to remove carbon and sludge deposits from gasoline engines. Using a high concentration of hyper polyether amine (PEA), this cleaner delivers significantly stronger deposit removal compared to conventional fuel system cleaners, helping restore lost engine performance caused by daily driving and low-RPM operation.
Designed to clean combustion chambers and spark plugs, the DDR additive targets internal deposits that build up over time due to incomplete combustion and short driving cycles. By dissolving and removing these deposits, it helps improve throttle response, combustion efficiency, and overall engine smoothness.
This additive is easy to use—simply pour one 225ml bottle into the fuel tank per 75 liters of gasoline. It is compatible with a wide range of gasoline engine types, including port injection, direct injection, carbureted engines, and rotary engines. The updated bottle design allows for easier pouring with less mess, making routine engine maintenance simple and effective.
Features:
High concentration hyper polyether amine (PEA) formula
Removes carbon and sludge deposits from combustion chambers
Helps clean spark plugs and restore engine performance
Effective for low-RPM and daily driving deposit buildup
Suitable for all gasoline engines, including DI, port injection, carbureted, and rotary
Easy-to-pour 225ml bottle
One bottle treats up to 75 liters of gasoline
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
