BLD4102H - Prestolite Leece Neville IDLE PRO X 24V 250A Brushless Alternator

Direct Replacement IDLE PRO X - Direct Replacement

Part Notes : Prestolite products not approved for aviation applications

The new Leece-Neville IdlePro Extreme™ series alternators offer industry-best output at low engine speeds, utilizing a high-amp, brushless design. Best-in-class IdlePro Extreme alternators feature an array of engineering benefits that enhance electrical system and engine performance to extend battery life and increase vehicle uptime. Isolated Ground Technology. Auxiliary Draft Cooling design* – special fan and front housing design and integration for temperature control of the front bearing. Front bearing is kept 10 C cooler as compared to traditional external fan designs. Remote sense capable to optimize alternator output and increase battery life.

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Alternative Products


Brand Name IDLE PRO XWeight N/A
New vs. Reman NewAC (R) Terminal Yes
Amperage 250Dust Screen No
Excitation Type SELFField ISO Terminal No
Ignition (I) Terminal NoIgnition Protection No
Lamp (L) Terminal YesMultipower Terminal No
Neutral Terminal NoSense (S) Terminal Yes
Painted Housing YesMounting Type J-180
Rotation CWVoltage 24
Product Family BLDPolarity Insulated return
Fan Location EXTRegulator Type INT

App Info

Data is not available for App Info


ImagePart NoDescriptionNotes
A041521350S  Alternator Fan  
A015106793S  Alternator Front Housing 
A020520994S  Alternator Rotor 
A022521452S  Alternator Stator  
A011106761S  Alternator Rear Housing 
A170521451S  Alternator Field Coil 
A051521467S  Alternator Rectifier  
R214521472S  Voltage Regulator 
K183106574S  Alternator Overhaul Kit 
K212106575S  Alternator Hardware Kit 

Where Used

Data is not available for Where Used

Cross Reference

Competitor PartNoCompetitor NameInterChange TypeNotes
BLD4102HIDLE PRO XDirect Replacement
10018201DelstarDirect Replacement
10018202DelstarDirect Replacement
100-18201DelstarDirect Replacement
100-18202DelstarDirect Replacement