Description
Part Description
This engine control module (ECM) was removed from a 2000 Mazda 626 donor vehicle and has been professionally inspected for proper function. The electronic brain box controls engine management for 4-cylinder engines with automatic transmission and low emissions configuration. This unit is currently on our shelf and ready for immediate shipment.
The engine control module is the computer that manages your vehicle’s engine performance, fuel injection, ignition timing, and emissions systems. When an ECM fails, symptoms include poor fuel economy, rough idling, stalling, or the check engine light staying on. This critical component requires replacement when damaged by electrical surges, moisture intrusion, or internal component failure over time.
603 Auto Salvage maintains over 50,000 used auto parts in stock from more than 1,100 vehicles in our Plaistow, NH facility. Our experienced team can help you find the right ECM for your Mazda or assist with compatibility questions. Browse our online inventory or contact us directly to verify fitment for your specific vehicle. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
Part Specifications
| Part | Engine Control Module (ECM) – Electronic Brain Box |
| Interchange # | 58566B |
| OEM Part Number | FS1K-18-881 |
| Side | N/A |
| Part Grade | X — Grade X – Inspected and tested, ready to ship. 4-cylinder, automatic transmission, low emissions, without immobilizer |
| Warranty | 90-Day Warranty (Standard warranty for tested electronic components) |
| Type | Used OEM |
Vehicle Information (Donor)
| Year / Make / Model | 2000 MAZDA MAZ626 |
| VIN | N/A |
| Vehicle Stock # | PCM6274 |
Our Testing & Inspection Process
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Engine Control Module (ECM) – Electronic Brain Box:
| ✅ Connector Pins | All pins straight and corrosion-free |
| ✅ Housing Integrity | No cracks or damage to ECM case |
| ✅ Internal Components | No signs of moisture or burn damage |
| ✅ Circuit Board | Clean with no visible component failure |
| ✅ Mounting Tabs | Intact and undamaged |
| ✅ Part Number Verification | Confirmed FS1K-18-881 ID number |
Compatibility — What Vehicles Does This Part Fit?
Based on interchange #58566B, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2000 | Mazda | 626 | 4-cylinder, automatic transmission, low emissions, without immobilizer, through VIN 148512 |
Questions? Need a shipping quote? Call us now:
603 Auto Salvage | 233 Main St, Plaistow, NH 03865
Mon–Fri 8am–4:30pm | Sat 8am–2pm | Sun Closed
Warranty & Shipping
Frequently Asked Questions
Will this ECM work in my 2000 Mazda 626?
This ECM fits 2000 Mazda 626 models with 4-cylinder engines, automatic transmission, and low emissions configuration through VIN 148512. Contact us with your VIN to verify compatibility.
Does this engine control module need programming?
Most ECMs require programming to match your vehicle’s VIN and security system. We recommend having this done by a qualified technician or Mazda dealer after installation.
What are signs that my ECM is failing?
Common symptoms include check engine light, poor fuel economy, rough idle, stalling, or failure to start. A diagnostic scan can help confirm ECM-related trouble codes.
Is this the same as a PCM or engine computer?
Yes, ECM (Engine Control Module), PCM (Powertrain Control Module), and engine computer all refer to the same electronic control unit that manages engine functions.
What interchange number does this ECM use?
This engine control module uses interchange number 58566B, which helps identify compatible units across different part suppliers and salvage yards.
Related Parts & Resources
OEM Part Numbers & Cross-Reference
Looking for this part by number? Here are the reference numbers:
| OEM Part Number | FS1K-18-881 |
| Interchange Number | 58566B |
| Stock Number | PCM6274 |
Price Comparison — Why Used OEM Makes Sense
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $400-600 | 1 year | Brand new, longest wait time |
| Aftermarket | $250-400 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $125-175 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $100 | 90-Day Warranty | Tested, Grade X, ships in 24hrs |
Installation Notes
- Disconnect battery before removing old ECM to prevent electrical damage
- Take photos of connector positions before disconnecting wiring harnesses
- Handle ECM carefully and avoid static electricity – use anti-static wrist strap if available
- Ensure all connectors click securely into place during installation
- Have ECM programmed by qualified technician after installation for proper operation
🔍 Free Fitment Check
Call us with your VIN and we will verify compatibility for free. No obligation, no pressure — just answers.
Our parts specialists check interchange data in real-time
Estimated Shipping Costs by Region
This part ships via FedEx Ground. Prices are estimates — call for an exact quote to your zip code.
| Region | Estimated Cost | Transit Time |
|---|---|---|
| New England (NH, MA, ME, VT, CT, RI) | $15 – $30 | 1–3 business days |
| Northeast (NY, NJ, PA, MD, VA) | $20 – $40 | 2–4 business days |
| Southeast (FL, GA, NC, SC, TN) | $25 – $45 | 3–5 business days |
| Midwest (OH, MI, IL, IN, WI, MN) | $30 – $50 | 3–5 business days |
| Southwest (TX, AZ, NM, OK) | $35 – $55 | 4–6 business days |
| West Coast (CA, OR, WA) | $40 – $65 | 5–7 business days |
Local pickup is always free. Free delivery within 30 miles of Plaistow, NH.
Why Buy From 603 Auto Salvage?
- 50,000+ parts in stock from over 1,100 vehicles on-site in Plaistow, NH
- Every part inspected before listing — no guesswork
- Family-owned salvage yard — real people, not a call center
- 90-Day Warranty on this part
- Fast shipping — most orders ship within 24 hours
- Competitive pricing — save 50–70% vs dealer prices
- Serving New Hampshire, Massachusetts & all 50 states
Ready to order? Call (603) 392-7313 or add to cart above. We are here to help.




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