Top Street Performance ES1004 Mini Alternator
Best price now
$141.21at Fitment IndustriesObserved Nov 8, 2026, 2:59 PM
26% under what the other stores charge
Compared across 12 stores. Prices are checked against each store and labelled with when.
26% under what the other stores charge
Compared across 12 stores. Prices are checked against each store and labelled with when.
It checks today's price at every store, compares the alternatives and answers in about a minute.
The Top Street Performance ES1004 is a compact Denso-style 90-amp alternator built for street rods, drag cars and engine swaps where engine bay space is tight. It has an internal regulator, one-wire capable wiring and a chrome finish, and weighs about 8 lbs. At $141.21 at Fitment Industries as of November 8, 2026, it sits at the low end of its recent range, with 12 stores listing it new.
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In stockSold by Top Street PerformanceReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
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Availability unknownSold by neverenoughauto (99.5% positive, 199,000 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
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Lowest price we've seen: $141.21 on Nov 8 at Fitment Industries. Tracked across 12 stores since Nov 8.
Maximize charging performance without sacrificing valuable engine bay space with this Denso-Style 90 Amp Mini Race Alternator. Designed for street rods, hot rods, race cars, drag cars, engine swaps, custom builds, and other space-constrained applications, this compact alternator delivers reliable charging performance in a lightweight, small-case package. The 90 amp output provides the charging capacity needed to support upgraded ignition systems, electric fuel pumps, electric cooling fans, lighting upgrades, gauges, data logging systems, and other electrical accessories commonly found on performance vehicles. Increased charging capacity helps maintain stable system voltage while reducing the charging limitations often associated with older factory charging systems. Built using a compact Denso-style housing, this mini alternator is specifically designed for applications where engine bay space is limited. Its lightweight construction and reduced overall size make it a popular choice for street rods, hot rods, drag racing vehicles, kit cars, custom chassis builds, and engine swap projects where clearance around headers, steering components, chassis tubing, or suspension components is critical. The one-wire capable design simplifies wiring while the internal voltage regulator helps maintain consistent charging performance. These features make installation easier for custom applications where clean wiring and minimal electrical complexity are desired. Equipped with a V-belt pulley and durable aluminum housing, this alternator is engineered for dependable operation in both street and competition environments. The bright satin finish provides a clean, show-quality appearance while delivering the performance needed to support modern electrical demands. Whether you're building a street rod, upgrading a hot rod, finishing a race car, or solving clearance issues in a custom engine bay, this Denso-style mini alternator provides the charging capacity, compact packaging, and reliability needed for dependable operation. Compact Mini Alternator Design • Small Denso-style case • Lightweight aluminum construction • Ideal for limited-clearance applications • Popular for engine swaps and custom builds 90 Amp Charging Performance • Supports electric fuel pumps • Supports ignition systems • Supports electric cooling fans • Supports lighting and gauges COMPATIBLE WITH Universal applications where alternator dimensions, mounting points, pulley style, belt alignment, and wiring configuration are verified before installation. COMMON VEHICLE APPLICATIONS Often used in custom installations requiring a compact alternator package, including: • Small Block Chevy Builds • Big Block Chevy Builds • LS Engine Swaps • Ford Windsor Builds • Chrysler Small Block & Big Block Builds • Custom Muscle Cars • Classic Trucks • Off-Road Builds • Dune Buggies • Sand Rails NOTES: • Universal fitment requires verification of: • Mounting ear spacing • Pulley style and diameter • Belt alignment • Bracket compatibility • Wiring configuration • Engine bay clearance SPECIFICATIONS: AC Service Tap: No Amperage Rating: 90 A Brushless: No Case Circumference: 13.200 in. Case Color: Silver Case Material: Aluminum Distance Between Mounting Feet: 6.150 in. External Fan Included: No External Regulator Included: No Family: Denso Fan Type: Internal Finish: Satin Ground Type: Case ground One Wire Capable: Yes Outside Pulley Diameter: 2.610 in. Pulley Belt Type: V-belt Pulley Groove Quantity: 1 Pulley Included: Yes Regulator Type: Internal Rotation Direction: Clockwise Terminal Quantity: 1 Voltage: 12 VDC
