Welcome to 603 Auto Salvage, We Sell Quality Used Auto Parts at Affordable prices.
Welcome to 603 Auto Salvage, We Sell Quality Used Auto Parts at Affordable prices.
$150.00
Used OEM Engine Control Module (ECM) for 1999 Lexus GS400. This electronic control unit manages engine operations and has been inspected and is ready to ship. Interchange #58269, Stock #PCM6534.
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This Engine Control Module (ECM) was removed from a 1999 Lexus GS400 donor vehicle and has been professionally inspected for functionality. The unit is identified as part number 88661-3A551 and is located behind the left headlamp assembly. This electronic control unit has been tested and is currently on our shelf ready for immediate shipment.
The Engine Control Module is the brain of your vehicle’s engine management system, controlling fuel injection, ignition timing, emissions systems, and other critical engine functions. ECM failures can cause poor engine performance, rough idling, stalling, check engine lights, or complete no-start conditions. When your original ECM fails due to electrical issues, corrosion, or component wear, a quality used OEM replacement is often the most cost-effective solution.
At 603 Auto Salvage, we maintain an inventory of over 50,000 used auto parts from more than 1,100 vehicles. Our experienced team carefully inspects each electronic component to ensure reliable performance. Contact us to verify compatibility with your specific vehicle or browse our extensive online inventory for additional Lexus parts and accessories. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
| Part | Engine Control Module (ECM) – Electronic Control Unit |
| Interchange # | 58269 |
| OEM Part Number | 88661-3A551 |
| Side | N/A |
| Part Grade | X — Inspected electronic control module, tested and ready to ship |
| Warranty | 90-Day Warranty (Standard warranty for tested electronic components) |
| Type | Used OEM |
| Year / Make / Model | 1999 LEXUS GS400 |
| VIN | N/A |
| Vehicle Stock # | PCM6534 |
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Engine Control Module (ECM) – Electronic Control Unit:
| ✅ Electronic Circuit Test | All circuits tested for proper continuity and function |
| ✅ Connector Inspection | All pins and connectors checked for corrosion or damage |
| ✅ Housing Condition | Case inspected for cracks, water damage, or physical damage |
| ✅ Internal Component Check | Internal components verified for proper operation |
| ✅ Programming Verification | Module confirmed to retain factory programming |
Based on interchange #58269, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 1999 | Lexus | GS400 | Contact us for full compatibility list and programming requirements |
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
This ECM is compatible with 1999 Lexus GS400 models, but programming may be required for your specific vehicle. Contact us with your VIN to verify exact compatibility and programming requirements.
Most ECMs require programming or initialization to work with your specific vehicle. We recommend having the module programmed by a qualified technician or Lexus dealer after installation.
Common symptoms include check engine lights, poor fuel economy, rough idling, stalling, or no-start conditions. A diagnostic scan can help determine if the ECM is the source of engine performance issues.
ECM installation requires disconnecting the battery, removing the old module from behind the left headlamp assembly, and connecting the new unit. Professional installation is recommended due to programming requirements.
ECM (Engine Control Module) specifically controls engine functions, while PCM (Powertrain Control Module) controls both engine and transmission. ECU is a general term for any Electronic Control Unit in the vehicle.
Looking for this part by number? Here are the reference numbers:
| Lexus Part Number | 88661-3A551 |
| Interchange Number | 58269 |
| Location | Behind left headlamp assembly |
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $800-1200 | 1 year | Brand new, longest wait time |
| Aftermarket | $400-600 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $200-300 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $150 | 90-Day Warranty | Tested, Grade X, ships in 24hrs |
🔍 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
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.
Ready to order? Call (603) 392-7313 or add to cart above. We are here to help.
| Weight | 3 lbs |
|---|
RatingAwesome experience Ray was the driver picked up my junk vehicle quickly efficiently and they even called to pick it up before schedule day because they had an opening. They kept their word super happy. I will definitely be using them again in the future.
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Drove from new york, Julie was a sweetheart asked questions to make sure that my ECU was the proper part number and was compatible with my manual Accord, price was phenomenal I highly recommend them for any parts your car may need. Definitely the best salvage yard around
Great experience at 603 Auto Salvage! ⭐️ The owner and employee were both extremely helpful and easy to work with. I was able to find everything I needed in one stop — about seven different items — which saved me a lot of time and hassle. Good selection, fair pricing, and friendly service. Definitely recommend checking them out if you're looking for parts. I’ll be back again! 👍🔧🚗
I had a great experience with 603 Auto Salvage Inc. The team was very helpful and quickly found the exact part I needed. They kept me informed and made the pickup process easy. The price was very fair, and the service was excellent. I would definitely recommend them and will use them again if I need parts in the future.
Excellent support, she helped me with my order service was fast and exactly what I needed.Very Professional.
The customer service at 603 was great. They found the part I needed very quickly and promptly notified me when it was ready to be picked up. There wasn’t any other place in the area that had what I needed. The price was very good also. I will be using them again for sure.
I had a great experience. They didn’t just look up the part I needed they took the time to explain how to install it and made sure I understood everything. I even received a call back, which I really appreciated. Everyone I spoke with was friendly and patient, and I never felt brushed off. I truly felt taken care of. Highly recommend if you want knowledgeable people who actually care about helping you. Kristy Thanks Guys!
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Bought a seat belt from here and a seat great service very polite will recommend
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