The AC Delco PT2544 is a genuine AC Delco Original Equipment (OE) fuel injector connector pigtail engineered to match GM factory specifications for fit, form, and function. It provides a direct-fit replacement for worn, damaged, or corroded injector harness connectors — restoring reliable electrical connection and performance to your fuel system.
Key Features
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Brand: AC Delco – trusted GM OEM quality replacement
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Part Number: PT2544 (OE Ref. 13576410)
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Connector Type: 2-terminal fuel injector wiring connector pigtail
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Wire Gauge: 18 AWG heavy-duty wiring
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Harness Length: Approx. 17.7 in for proper reach and routing
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Durable Construction: Designed to withstand under-hood heat, vibration, and exposure
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OEM-Recommended Replacement: Manufactured to meet or exceed GM standards for durability and performance
Fits / Application
Designed to fit the following Duramax diesel applications:
✔ 2011–2016 LML 6.6L Duramax engines (common in late-model Silverado/Sierra 2500/3500)
✔ 2017–2024 L5P 6.6L Duramax engines (GM’s updated high-output diesel platform)
(Note: fitment verified for injector pigtail end-connector applications similar to other LML/L5P aftermarket pigtails — always confirm with vehicle VIN prior to purchase.)
Benefits
✔ Direct OE Replacement – Replaces factory injector connector without modification
✔ Reliable Performance – Engineered to GM’s original wiring specs for consistent signal integrity
✔ Cost-Efficient Repair – Replace only the connector pigtail instead of an entire harness
✔ Simple Installation – Color-coded wires make installation intuitive for technicians and DIYers
Why AC Delco
AC Delco parts deliver the same quality and durability as the components originally installed in your GM vehicle. Their connectors are designed and tested to provide long service life and dependable performance, giving you confidence in every repair.
