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Technical Specification
PRODUCT NUMBER 11177N12626N13723NA5171A5226A5320A5332A5397SA5412SA5432SA5444S14687N20224N12132N12310N
Voltage 121212121212121212122412241224
Output Current 809080801504518515018522090351003540
Design IR/IFIR/IFIR/IFIR/EFIR/IFER/EFMitsubishi IR/EF
Manufacturer MitsubishiMitsubishiMitsubishiMitsubishiMitsubishiMitsubishi
Pulley S5V2S6APAFPAPAFP-INAAFPAFPAFPAPGroove PulleyGroove Pulley
Rotation CWCWCWCWCWCWCW

Q 1. What machines does the WAI 12303N fit?

A. This alternator covers 164 applications across three makes: 147 Mitsubishi models, 10 Caterpillar Ag. & Ind. models (including the GC15, GC18, GC20, GC25, GC30, GP15, GP18, and GP20), and 7 Clark machines. Use the selection widget to match your make, model, and engine variant, or search our cross-referenced catalogue by machine model or OEM number. Every fitment shown is backed by our Fit Guarantee.

Q 2. Which Mitsubishi part numbers does the WAI 12303N cross-reference to?

A. The 12303N cross-references to 8 Mitsubishi original-equipment numbers including Mitsubishi A003T03471, Mitsubishi A003T03499, Mitsubishi A3T02892, Mitsubishi A3T03471, Mitsubishi A3T03499, Mitsubishi MD133513, Mitsubishi MD169683, and Mitsubishi MD169683D. There are 16 cross-references in total across all brands. Search by any of these numbers in our catalogue to confirm the match, or ask Simon if you need further help.

Q 3. Does this alternator replace a Denso or Delco Remy unit?

A. Yes. The WAI 12303N is cross-referenced to Denso USA 2109012 and Delco Remy DRA3146, as well as CLARK 920244. If your machine currently carries any of these units, the 12303N is the listed replacement. Verify via the selection widget or by searching our catalogue using those reference numbers.

Q 4. What are the key electrical and mechanical specifications of the 12303N?

A. The alternator operates at 12V with a 65A output rating. It uses an IR/IF (internally regulated, internally fused) design, meaning the regulator is integrated within the unit. Rotation is clockwise and the pulley is a groove type to match the original belt arrangement. The unit is supplied brand new.

Q 5. What does the IR/IF design mean for installation?

A. IR/IF stands for internally regulated, internally fused. The voltage regulator is built into the alternator body, so there is no separate external regulator to wire in or replace. This makes the 12303N a straightforward like-for-like swap on machines that originally used the same IR/IF architecture.

Q 6. 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 7. 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.

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