If a failed leak detection pump is behind your EVAP trouble, the Standard Ignition Evaporative Emissions System Leak Detection Pump LDP31 is a direct-fit OE replacement built to take its place. It fits the 1998-2001 Dodge Ram 1500, 1998-2002 Dodge Ram 2500, 1998-2002 Dodge Ram 3500, and 1998 Jeep Grand Cherokee. See the Buyer's Guide tab for engine details.
This fuel vapor leak detection pump uses engine vacuum to check the evaporative emissions system for leaks. Its calibrated diaphragm and spring open and close to send voltage readings to the switch, which the vehicle uses in its leak test.
- Vacuum-operated leak detection: A direct-fit OE replacement that uses engine vacuum to accurately detect evaporative leaks.
- High-temperature housing: The OE-style plastic housing is designed for a precise fit and to perform in hazardous conditions.
- OE-quality connector and terminals: Designed for an exact fit and strong conductivity to the engine wiring harness, supporting precise engine performance.
- Precision-calibrated diaphragm and spring: They open and close correctly to deliver accurate voltage readings to the switch.
Signs this part may need replacing: a check engine light with evaporative system leak codes, a failed EVAP emissions check, or a cracked housing or damaged connector. Other EVAP components can cause the same symptoms, so diagnose the cause before replacing the pump.
Interchange: 2-71030
271030 · VDP31 · 4669336 · 4669336AD · 4891415AA · 4891415AB · 4891415AC · ESM1007
This part cross-references / interchanges with the following part numbers:
VDP31, 4669336, 4669336AD, 4891415AA, 4891415AB, 4891415AC, ESM1007, 2-71030
