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Technical Specification
PRODUCT NUMBER 86003107127-12RA1029A1029PRA10397127-SEN7127-SEN-2G7256N7850N7853N-140A8030N8073N8718N12168N-DR7127-SEN-1
Voltage 1212121212121212122412121212
Output Current 631001001406363901001407013016016063
Design IR/EF10SI Series IR/EFIR/EF30SI/TR Series IR/IF27SI/200 Series IR/EF15SI IR/EF21SI Series IR/EF22SI Series IR/EF24SI Series HP IR/IFCS130D IR/IF10SI Series
Manufacturer DelcoDelcoDelcoDelcoDelcoDelcoDelcoDelcoDelcoDelcoDelco
Pulley V1AFPAFPAFPGroove PulleyGroove PulleyWithout PulleyWithout PulleyGroove PulleyWithout PulleyWithout PulleyWithout PulleyGroove PulleyGroove Pulley
Rotation CWCWCWCWBi-directionalCWCWCWCWCWCW

Q 1. Which Remy and Reliance part numbers does this alternator replace?

A. The WAI 7127-SEN-100A1G is cross-referenced against six original-equipment numbers: Remy 20222, Remy P72923R, Remy P72926R, Remy RA00103, Remy RA00113, and Reliance 71273. If your existing alternator carries one of these references, this is the corresponding replacement. To confirm fitment to your specific vehicle or machine, use the selection widget or search our cross-referenced catalogue by OEM number — every match shown is backed by our Fit Guarantee.

Q 2. What vehicles or machines does this alternator fit?

A. Fitment data is not published in this listing for this particular part number. To identify compatible applications, search our cross-referenced catalogue using any of the OEM numbers above (Remy 20222, Remy P72923R, Reliance 71273, and so on), or ask Simon with your machine make, model, and engine details. Our Fit Guarantee covers every application confirmed through our catalogue.

Q 3. Is this a brand-new alternator or a remanufactured exchange unit?

A. This is a brand-new unit. It is not remanufactured and is not sold on an exchange basis, so there is no core charge and no requirement to return a worn alternator.

Q 4. What rotation direction and pulley type does this alternator have?

A. The 7127-SEN-100A1G is specified with clockwise (CW) rotation and a groove pulley. Confirm that your drive-belt configuration and pulley arrangement match these specifications before ordering.

Q 5. What does the IR/EF designation mean on this Delco 10SI alternator?

A. IR stands for internal regulation, meaning the voltage regulator is integrated within the alternator body rather than mounted separately on the vehicle. EF denotes the end-frame location of that regulator. On a 10SI Series unit this arrangement removes the need for an external regulator, simplifying both installation and future servicing.

Q 6. How do I confirm this part fits my vehicle or machine?

A. Use the selection widget to match your make, model and engine, or search our cross-referenced catalogue by OEM number, machine model or equivalent part across brands. If your vehicle is not listed, ask Simon. Every fitment shown is backed by our Fit Guarantee.

Q 7. Can I ask questions about this product before ordering?

A. Yes — ask Simon, or WhatsApp our team on 07754 288583 with any questions about specifications, suitability, or compatibility.

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