Phone Phone 01926754100 Cart Cart
Fit guarantee icon
FIT GUARANTEE or Hassle-Free Returns
Quick delivery icon
QUICK DELIVERY On All Products Across UK
Customer support icon
GREAT SUPPORT 24/7 Support For Any Query
rating icon
TOP RATED Trusted by Our Customers
  • Ratings Standard Delivery: £4.99
  • Delivery Delivery Estimate: 1 to 2 working days
  • Save Extra Save Extra With 1 Offer
  • Ratings Compare With Similar Items
  • Use promo code "RMPK1" to get Additional 1% OFF
Compare with Similar products
WAI 7127-12R 12V 63A Alternator DELCO IR/EF

WAI 7127-12R 12V 63A Alternator DELCO IR/EF

£53.35 £52.30
2% OFF
AS-PL A1029 12V 100A Alternator DELCO Type

AS-PL A1029 12V 100A Alternator DELCO Type

£130.92 £128.35
2% OFF
AS-PL A1029PR 12V 100A Alternator DELCO Type

AS-PL A1029PR 12V 100A Alternator DELCO Type

£123.97 £121.54
2% OFF
AS-PL A1039 12V 140A Alternator DELCO Type

AS-PL A1039 12V 140A Alternator DELCO Type

£169.31 £165.99
2% OFF
Technical Specification
PRODUCT NUMBER 86003107127-12RA1029A1029PRA10397127-SEN7127-SEN-100A1G7127-SEN-2G7256N7850N7853N-140A8030N8073N8718N12168N-DR
Voltage 1212121212121212121224121212
Output Current 6310010014063100639010014070130160160
Design IR/EF10SI Series 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/IF
Manufacturer DelcoDelcoDelcoDelcoDelcoDelcoDelcoDelcoDelcoDelcoDelco
Pulley V1AFPAFPAFPGroove PulleyGroove PulleyGroove PulleyWithout PulleyWithout PulleyGroove PulleyWithout PulleyWithout PulleyWithout PulleyGroove Pulley
Rotation CWCWCWCWCWBi-directionalCWCWCWCWCW

Q 1. What does the WAI 8724N replace, and which machines does it fit?

A. This alternator replaces Cummins original-equipment numbers 3972731 and 4988275, and Remy reference 19020205. On the machine side, it fits Cummins Fire Power engines across 5 applications, including the CFP83-F10, CFP83-F20, CFP83-F30, CFP83-F40, and CFP8E-F10 (2004–2006). Use the selection widget or search our cross-referenced catalogue by OEM number or machine model to confirm fit for your build. Every fitment shown is backed by our Fit Guarantee.

Q 2. Does this alternator replace Cummins part numbers 3972731 or 4988275?

A. Yes. Both Cummins 3972731 and Cummins 4988275 are confirmed OE cross-references for the WAI 8724N. Remy 19020205 is also a listed cross-reference. These are the only published cross-references for this part; if you are working from a different number, search our catalogue by OEM reference or ask Simon to verify.

Q 3. What are the key electrical specifications of this alternator?

A. The WAI 8724N is rated at 24 volts and 45 amps output. It follows the Delco 11SI Series IR/IF design — internal regulator, internal fan — and is supplied brand new without a pulley. A compatible pulley for the target application will need to be sourced separately.

Q 4. Does the WAI 8724N come with a pulley fitted?

A. No — this alternator is supplied without a pulley (w/o Pulley). You will need to fit a suitable pulley for your specific application before installation.

Q 5. 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.

Q 6. Is this part covered by your Fit Guarantee?

A. Yes. Every vehicle and OE cross-reference shown for this part is checked against manufacturer data and backed by our Fit Guarantee. If it is not right, our Fit Guarantee or hassle-free returns have you covered.

Get exclusive updates on offers & latest trends in construction industry

By sharing your email, you agree to our privacy policy & terms of service