Fiat Tipo Alternator: Specs, Fitment & Common Faults
On the Tipo, a genuinely useful DIY access technique helps reach the notoriously awkward top mounting bolt when replacing the alternator.
Illustration for editorial purposes
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OEM Part Number: 51993603 (genuine alternator — confirm via VIN) — aftermarket alternators Valeo 437474 / Denso DAN1066
| Alternators (aftermarket) | Denso DAN1066 (120 A, freewheel pulley, 6 ribs, 54 mm, new); Denso DAN1086 (120 A, freewheel pulley, 6 ribs, 54 mm, new); Denso DAN1078 (120 A, freewheel pulley, 5 ribs, 54 mm, new); Denso DAN993 (120 A, freewheel pulley, 5 ribs, 54 mm, new); Denso DAN999 (120 A, multi-rib rigid pulley, 5 ribs, 54 mm, new); Hella 8EL 012 430-891 (120 A, freewheel pulley, 5 ribs, 54 mm, new); Valeo 437474 (90 A, 6 ribs, 55 mm, reman exchange with deposit, three-point fixing, £50.24 surcharge); Lucas LRA02804 (90 A, freewheel pulley, 6 ribs, 54 mm, reman, plug 0230, £20.09 surcharge) |
|---|---|
| Outputs & variants | 80 to 90 A 6-rib units are the basic 1.4 16v petrol fitment; 105 A 5-rib rigid units (AS-PL A4058) suit the 1.4 T-Jet and LPG cars; 120 A is the main fitment for the 1.6 E-Torq petrol and 1.3 and 1.6 Multijet diesels, in 5-rib and 6-rib freewheel forms; 150 A 6-rib (AS-PL A6364) covers the highest-load specification. |
| Genuine (OE) numbers quoted | 63377007 (AS-PL A4058, 105 A); 1012101120 (AS-PL A4074, 90 A); 104211-8540 (AS-PL A6364, 150 A). |
| Fitment notes | The 120 A output exists in both 5-rib and 6-rib freewheel versions, so count the ribs on the old pulley before ordering. Ridex references exclude the vacuum pump. The Hella unit is marked for fitting by qualified staff. The Valeo reman carries a £50.24 deposit and the Lucas £20.09; AS-PL PR units are exchange without a deposit. |
A Genuinely Useful, Real DIY Access Technique Worth Knowing — Fiat Tipo Alternator
If you're replacing the alternator yourself and struggling to reach the top mounting bolt, this is genuinely worth knowing: disconnecting the "dog bone" engine mount and wedging the engine forward slightly, away from the firewall, creates just an extra inch of working space — but that single extra inch has been described as making all the difference when trying to reach this specific bolt on related models.
It's also genuinely worth knowing it's worth briefly running the engine with the auxiliary drive belt removed, if safe and practical, since this rules out the belt itself as the source of a noise you might otherwise blame on the alternator.
Fiat Tipo Alternator: Often Blamed on the Battery Instead
Because a weak Fiat Tipo battery and a dying alternator both cause dim lights, slow starts and charge that won't hold, it's an easy mistake to replace the wrong one first. That mix-up sends plenty of people back to the garage a few weeks later, the real fault still there.
Fiat Tipo Alternator: Watch: Replacing It
No Tipo/Egea alternator video found; 500X shares Small Wide platform and 1.4/1.6 engines
Fiat Tipo Alternator: What It Does
Every time the Fiat Tipo's engine runs, the alternator is generating the electricity that charges the battery and directly feeds the electrical systems. A properly working alternator leaves the battery mostly responsible for engine starts and short demand spikes — not for running the electronics unaided.
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Fiat Tipo Alternator: Warning Signs, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Alternator Guide for symptoms to watch for (plus a genuinely useful two-minute test to confirm it's not the battery instead), confirming the right amperage and fitment against your VIN, and which brands are worth trusting.
More Fiat Alternator
The same part, covered across other Fiat models.