CSF 13-19 Ram 1500 3.6L OEM Plastic Radiator - 3662

The CSF 13-19 Ram 1500 3.6L OEM Plastic Radiator (Part #3662) is a direct-fit replacement radiator engineered specifically for 2013–2019 Ram 1500 trucks equipped with the 3.6L engine. CSF is a well-regarded name in the cooling system aftermarket, and this radiator is built to match the factory configuration of your truck — making it a straightforward, no-hassle swap when your original unit is leaking, cracked, or simply worn out. If your Ram 1500 is running hot or you've spotted coolant pooling under the truck, a quality OEM-replacement radiator like this one is the right first step toward restoring proper thermal management.

Key Features & Benefits

• OEM-Style Plastic Tank Construction: Matches the original equipment design with plastic end tanks, keeping the replacement process familiar and straightforward for DIYers and shop technicians alike — no adapters or modifications required.
• Direct-Fit for 2013–2019 Ram 1500 3.6L: Engineered to slot into the factory radiator position without cutting, drilling, or bracket fabrication, reducing installation time and the risk of fitment headaches.
• CSF Quality: CSF is a recognized name in the cooling industry, producing replacement and performance cooling components for a wide range of vehicles. Choosing a branded unit over a no-name alternative gives buyers more confidence in manufacturing consistency.
• Restores Proper Engine Cooling: A failing radiator can lead to overheating, coolant loss, and potential engine damage. Replacing a cracked or leaking radiator with a fresh unit helps protect your 3.6L Pentastar engine and keep your Ram running within safe temperature ranges.
• Regularly Stocked Product: Listed as a regularly stocked item at ThreePiece.us, meaning you're not waiting months on a special-order product for this application.

Specifications

• Brand: CSF
• Part Number (MPN): 3662
• SKU: CSF3662
• UPC: 710353036624
• Construction: OEM-style plastic tank radiator
• Application: 2013–2019 Ram 1500 with 3.6L engine
• Price: $140.84

Fitment

This CSF replacement radiator (part #3662) is confirmed to fit the following vehicles:

• 2013–2019 Ram 1500 — 3.6L engine

Fitment is specific to the 3.6L engine configuration. If your Ram 1500 is equipped with a different engine (such as the 5.7L HEMI or a diesel variant), this radiator is not confirmed to be compatible. Always verify your engine size before ordering. Not sure if this part fits your specific truck? Contact the ThreePiece.us team for fitment verification before placing your order.

Why Buy from ThreePiece.us

• Free Shipping: Every order ships free — no minimum purchase required, no surprise freight charges at checkout.
• Affirm Financing: Spread the cost over time with Affirm financing, available at checkout. Budget-friendly options mean you don't have to delay a necessary repair.
• Expert Fitment Support: The ThreePiece.us team has served 10,000+ customers and is available to help verify that this radiator is the right fit for your specific Ram 1500 build. Reach out by phone at 813-535-5801 or via email before or after purchase.
• Price Match Guarantee: Found this radiator listed lower elsewhere? ThreePiece.us offers a price match guarantee — just reach out to the team with the competing offer.
• Regularly Stocked: This is not a special-order item, meaning you can expect normal lead times rather than extended waits.

Frequently Asked Questions

Q: What years and engine does this radiator fit?
A: The CSF 3662 radiator is confirmed to fit 2013–2019 Ram 1500 trucks with the 3.6L engine. If your Ram has a different engine, this part is not verified as compatible — contact us to find the right fitment for your vehicle.

Q: Is this an OEM radiator or an aftermarket replacement?
A: This is an OEM-style aftermarket replacement radiator made by CSF. It features plastic tank construction consistent with the factory design, making it a direct-fit substitute for the original radiator rather than an upgraded or performance-oriented unit.

Q: Is this item in stock and ready to ship?
A: Yes — this product is listed as a regularly stocked item at ThreePiece.us, meaning it is not a special order. Free shipping is included on every order.

Q: Can I use financing to purchase this radiator?
A: Yes. ThreePiece.us offers financing through Affirm, available at checkout. This lets you get the repair done now and pay over time at a schedule that works for your budget.