From the brand
Product description
Why Alternator Health Matters on Modern Hondas
Once the engine is running, the alternator powers:
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ECU, ignition, and fuel systems
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Electric power steering
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Safety systems and sensors
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Headlights, infotainment, and HVAC
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Charging and maintaining the battery
When alternator output drops, the battery takes over — briefly — and then fails early. Common symptoms include:
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Repeated dead batteries
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Flickering or dim headlights
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Charging system warning lights
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Electrical glitches and unstable drivability
Replacing the alternator fixes the root cause, not just the symptoms.
Why 135 Amps Is the Right Output
These Honda and Acura platforms were engineered for higher electrical demand than older models. A 135-amp alternator provides:
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Stable voltage at idle and cruising speeds
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Faster battery recovery after cold starts
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Consistent output with accessories running
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Reduced strain on the battery and wiring
It’s not overkill — it’s exactly what these systems expect.
Compatible with Acura Models:
- 2016-2022 ILX L4 2.4L
- 2015-2020 TLX L4 2.4L
Compatible with Honda Models:
- 2015-2019 CR-V L4 2.4L
OEM Number:
- 21154, A6504S, 104211-3470, 104211-3471
- 210-0809, 400-52475R, 290-5653
- 06311-5X6-505RM, 31100-5X6-J01, 31100-5X6-J01RM
Specifications:
- Amperage: 135A
- Voltage: 12V
- Rotation: Clockwise
- Number of Grooves: 7
- Fan Design Type: Internal
- Regualtor Design Type: Internal
Built for OE Fitment and Long-Term Reliability
This A-Premium alternator features:
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High-efficiency copper windings
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Internal voltage regulator for consistent output
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Precision-balanced internals for smooth operation
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OE-style mounting points and electrical connectors
The 7-groove pulley ensures proper belt engagement, quiet operation, and long belt life.
At Pro Street Online, we sell parts that actually fix problems. This alternator is:
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Vehicle-specific
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Correctly rated
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Designed to meet factory charging requirements
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Ideal for daily drivers and long-term ownership
If your CR-V, TLX, or ILX keeps killing batteries, this is the fix — not another jump start.
Jody –
What I liked most was the price, then the compatibility with my vehicle. Compared to the prices for an alternator at my local parts store, this one can’t be beat. Thank you for being affordable and the delivery time was great. My son-in-law put it in my car and it the functionality is super, with a great fit.
Sammie –
This is a great product, especially for the price. It fit my 2016 Honda CR-V EX perfectly and it is running smooth.**8 month update: still running great and showing no signs of wear. Hopefully I can get a handful of years out of this.
Perri C Segerson –
Replaced my alternator with this part, in July, now the new alternator has failed.
Amazon Customer –
The part came earlier than expected for my son’s Honda CRV. The price is reasonable for year, make and model vehicle. No issues with any defective operations or with this part and was easy to replace
David Myers –
Works great. 2016 Honda CRV Touring
Ray Bengel –
The alternator met the specifications and worked perfectly. The price was right.
Dee –
So far I haven’t had any issues with it, it’s quite
Corey Frederick Mitchell –
So far so good