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FleetPro Parts

Cummins Threaded Plug - 3680420

Cummins Threaded Plug - 3680420

Regular price $9.99 USD
Regular price $20.69 USD Sale price $9.99 USD
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Orders are typically processed within 24–48 hours, Monday through Friday, excluding major U.S. holidays. Shipping options include Small Package Saver, Ground, Second Day Air, and Next Day Air. Free Shipping applies to qualifying items within the contiguous 48 states. Freight or oversized shipments require a commercial address. Please inspect all deliveries and report damages within 24–48 hours. We ship only within the continental U.S. and cannot deliver to P.O. boxes or international locations. Most orders ship from our North Carolina warehouse. For estimated transit times, see the shipping chart. Read more information.

About us

Expert-selected truck parts

At FleetPro Parts, we specialize in supplying OEM replacement parts for heavy-duty trucks. From Freightliner and Detroit Diesel to Cummins, Mack, Volvo, and Wabco, our catalog covers the components you need to keep your fleet moving. Every part we stock is tested, reliable, and built to match OEM standards, so you can order with confidence. Our team knows truck parts inside out—from engine cooling and steering to AC systems, alternators, and fuel components. Whether you’re maintaining a single truck or managing an entire fleet, we make it easy to find the right part, at the right time. For when it matters. More about Us.

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FleetPro Truck Center Inc • 4989 Hendersonville Rd, Fletcher, NC 28732 • Phone +1 888-722-1331

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Description:

Genuine Cummins Threaded Plug 3680420 — a precision-engineered OEM threaded plug designed to seal unused ports and openings in Cummins engines and related systems. Its durable construction ensures a secure, leak-resistant closure in fluid and air passages, helping maintain proper engine performance and prevent leaks. Ideal for maintenance, repair, or engine assembly applications.

Features:

Part#: 3680420
Brand: Cummins OEM
Type: Threaded port plug
Thread Size: M14 × 1.50 (straight thread boss plug)
Material: High-strength corrosion-resistant steel
O-Ring Included: Yes (for variants with boss plug design)
Condition: New OEM replacement
Application: Seals openings in Cummins engine fluid/air systems (engine block, cooling system, oil passages)

Part# : 3680420
Brand: Cummins