Ignitions and Electrical› Computers, Chips, Modules and Programmers

Honda

Rewritable Engine Control Unit

$633.66

SKU: 37820-5AA-A56

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Phearable 37820-5AA-A56 is a genuine Honda powertrain control module (PCM) designed as a rewritable engine control unit. This factory-spec component serves as a replacement for select 1.5L and 2.0L Honda Civic models, supporting reliable engine management.
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The Phearable 37820-5AA-A56 is a genuine Honda powertrain control module (PCM) designed as a rewritable engine control unit for optimal vehicle performance. As an original equipment manufacturer (OEM) part, it is constructed to meet strict factory specifications and undergoes rigorous testing to ensure durability, reliability, and safe operation. It is commonly utilized for 2016-2021 Honda Civic 1.5L Turbo and 2.0L naturally aspirated configurations. This control module is highly regarded for its compatibility with tuning platforms such as Ktuner, where it is frequently used to support stage-specific software tunes for improved performance. The unit is interchangeable with several other factory ECU software numbers, including 37820-5AA-A58 and 37820-5AA-A59. Please note that this unit typically requires professional programming at a dealership to ensure full system integration with your vehicle's specific immobilizer and security protocols. Buyers should verify their specific ECU software number for exact fitment compatibility.

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

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Specifications

BrandHonda
Part Number37820-5AA-A56
CategoryIgnitions and Electrical

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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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