Ignitions and Electrical› Charging Systems

REMY

IMPORT ALTERNATOR

$636.59

SKU: R06B 20021

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

This Remy 20021 Premium Remanufactured Alternator is specifically designed for powerful performance in Ram 3500, 4500, and 5500 models. With an impressive 220 amperage rating, it ensures your heavy-duty truck has the reliable power needed to run efficiently, even under demanding conditions. Engineered with precision, this alternator features an external regulator and a serpentine pulley system to guarantee optimal operation and longevity. Replacing your alternator is critical in maintaining your vehicle's health. Common symptoms indicating alternator replacement include dim headlights, dead battery, or unusual electrical issues. Designed to meet and exceed OE specifications, the Remy 20021 offers a seamless fit and superior durability. This part is interchangeable with Chrysler and DENSO alternatives, making it a versatile solution for your vehicle's electrical needs.
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IMPORT ALTERNATOR

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandREMY
Part NumberR06B 20021
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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