Description
Part Description
This OEM engine control module (ECM) was removed from a 2008 Honda Accord donor vehicle equipped with a 3.5L engine and automatic transmission. The unit features California emissions specifications with ID 37820-R71-L59. This electronic brain box has been professionally inspected and is currently on our shelf ready for immediate shipment.
The engine control module is the central computer that manages your Honda’s engine performance, fuel injection, ignition timing, and emissions systems. When ECMs fail, symptoms include poor fuel economy, rough idling, stalling, check engine lights, or complete no-start conditions. Replacement is often necessary due to internal circuit failures, water damage, or electrical surges that can occur over time.
At 603 Auto Salvage, we maintain over 50,000 quality used parts in stock from more than 1,100 vehicles. Our experienced team ensures each part meets our standards before it reaches our shelves. Contact us to verify compatibility with your specific vehicle or browse our extensive inventory online for additional Honda Accord components. 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 # | 51318 |
| OEM Part Number | 37820-R71-L59 |
| Side | N/A |
| Part Grade | X — Grade X – Inspected and ready to ship, California emissions specification |
| Warranty | 90-Day Warranty (Standard warranty for electronic control modules) |
| Type | Used OEM |
Vehicle Information (Donor)
| Year / Make / Model | 2008 HONDA ACCORD |
| VIN | N/A |
| Vehicle Stock # | ACC2025 |
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 |
| ✅ Circuit Board | Internal components visually inspected |
| ✅ Mounting Points | All mounting tabs and brackets intact |
| ✅ Part Number Verification | Confirmed 37820-R71-L59 California emissions ID |
Compatibility — What Vehicles Does This Part Fit?
Based on interchange #51318, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2008 | Honda | Accord | 3.5L engine, automatic transmission, California emissions – Contact us for full compatibility verification |
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 2008 Honda Accord?
This ECM is specifically for 2008 Honda Accord models with 3.5L engines and automatic transmissions with California emissions. Contact us with your VIN to verify exact compatibility before ordering.
Does the ECM need to be programmed after installation?
Yes, most Honda ECMs require programming to your vehicle’s VIN and security system. This should be done by a qualified Honda technician or automotive locksmith with the proper equipment.
What causes Honda Accord ECMs to fail?
Common causes include electrical surges, water damage from flooding, internal circuit degradation over time, and voltage spikes from alternator or battery issues. Age and heat cycling can also cause component failures.
How do I know if my ECM is bad?
Symptoms include check engine lights, poor fuel economy, rough idle, stalling, no-start conditions, or erratic engine behavior. Professional diagnosis is recommended as these symptoms can indicate other issues.
What is interchange number 51318?
Interchange 51318 is the industry standard reference number for this ECM application. It helps identify compatible units across different suppliers and ensures you get the correct part for your vehicle.
Related Parts & Resources
OEM Part Numbers & Cross-Reference
Looking for this part by number? Here are the reference numbers:
| Honda Part Number | 37820-R71-L59 |
| Emissions Type | California Emissions |
| Engine Application | 3.5L V6 Automatic Transmission |
Price Comparison — Why Used OEM Makes Sense
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $450-650 | 1 year | Brand new, longest wait time |
| Aftermarket | $200-350 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $100-150 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $75 | 90-Day Warranty | Tested, Grade X, ships in 24hrs |
Installation Notes
- Disconnect battery before removing old ECM to prevent electrical damage
- Use anti-static precautions when handling the ECM to protect sensitive circuits
- Ensure all electrical connections are clean and properly seated
- Have the ECM programmed immediately after installation for proper operation
- Clear all diagnostic codes after programming is complete
🔍 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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