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New suitable replacement In Frame Overhaul Kit CumminsN14 Low Compression Cpl's: 1807, 1833, 2027, 2038, 2330, 2389, 2590 FREE BUSINESS TO BUSINESS FREIGHT 24 Month / Unlimited Mile Manufacture Warranty AFA™s N14 piston Top and 2nd compression rings are made from high carbon steel up to date according to OE spec. The ring sets use the latest number 4089489 which includes a high grade stainless steel oil ring that is gas nitride coated to provide a more robust and corrosion resistant oil ring to provide superior oil control performance and extended service life. AFA™S piston skirt's aluminum alloy composition is a proprietary formula that provides superior strength and durability. AFA has tested all the competing brands piston skirt metallurgy and found that certain key elements such as 12% silicon was lacking. Many of them had less than 12% silicon composition. This means their skirt is not up to spec and could crack or break during engine start-up or operating conditions. You won't ever have to worry about that type of warranty with the AFA piston skirts. AFA is on the cutting edge of gasket engineering and manufacturing. Only the Highest quality materials and specified, tested and quality controlled throughout the production process. The entire gasket is designed to perfectly fit each application. Tolerances meet or exceed OE specifactions. Based on actual field evaluation and customer input, AFA products frequently contain features not found in the OE product, features that solve unexpected installation and performance issues.Free Freight Lower 48 States Business to Business
Warranty Information
Overview
We stand behind every part we sell — new, rebuilt, or used. While RF Engine is not the manufacturer and cannot extend additional warranties, we do guarantee that each product will arrive as described, in usable condition, and free from material defects or misrepresentation.
Warranty Coverage
- New Parts: Covered under the original manufacturer’s warranty. All terms and coverage are set by the manufacturer. Copies available upon request.
- Rebuilt, Reconditioned, and Used Parts: Backed by an inspection-only warranty unless otherwise stated. As with new parts, RF Engine cannot provide further warranty coverage beyond the manufacturer’s terms.
- No Additional Warranty: RF Engine does not offer any express or implied warranties. However, if an issue arises, we are here to assist and will support you through any applicable manufacturer claim process.
Our Guarantee
All parts are guaranteed to be in the condition stated at the time of sale and free from misrepresentation. If something isn’t right, we’ll work with you to resolve it — including returns, exchanges, or refunds when appropriate.
- We sell parts — we don’t make them — but we stand behind what we sell.
- Guaranteed to match the description or your money back.
- Manufacturer’s warranty applies where available; we’ll help if you ever need it.
Used Parts — What to Expect
Used parts are cleaned, inspected, and guaranteed to be usable, but please note:
- They often have signs of wear, surface rust, blemishes, or cosmetic imperfections.
- They may include old gaskets or residue and likely require further cleaning or machining before installation.
- They are not refurbished, remanufactured, or restored to like-new appearance.
We recommend careful inspection and strongly encourage installation by a qualified heavy-duty diesel mechanic.
- Worn, not worn out — used parts may show signs of age but are fit for service.
- All used parts are tested for usability, not appearance.
Questions?
If you have questions about a part’s condition, warranty, or how we handle returns and guarantees, feel free to contact us. We’re here to help.
Last Updated: June 22, 2025
All specifications and numbers are provided for reference only and should be independently verified before use. While we guarantee our parts match their descriptions and accept returns for any discrepancies, we cannot be held liable for installation costs, modifications, or consequential damages. Questions about compatibility? Contact our parts experts at 800-828-6943, sales@dieselcranks.com, or via live chat, Mon-Fri 8am-5pm EST.
