8237-270 Amp XP High Amp Alternator for Hummer, Escalade, S-10, Blazer, Silverado, Avalanche, Suburban, Tahoe, Astro Van, Express Van, SSR, Sonoma, Sierra, Yukon, Savana (Cast Version)
DC Power 8237-270 Amp XP High Amp Alternator for Hummer, Escalade, S-10, Blazer, Silverado, Avalanche, Suburban, Tahoe, Astro Van, Express Van, SSR, Sonoma, Sierra, Yukon, Savana
 


Price: $699.95

Price with Selected Options: $699.95


Product Code: 8237-270XP-CAST


Alternator:
Color Options


Cable Kit Upgrade


Warranty



Qty:  
DESCRIPTION YEAR FITMENTS
 
 
PRODUCT FEATURES
Our XP series high-output alternators are the ultimate upgrade when you need the absolute biggest and most sophisticated high output alternator on the planet. All of our XP series alternators are designed for one purpose, brute force idle output. When you need the most extreme idle output with the most sophisticated integrated alternator-monitoring system to prevent thermal failures is where the XP alternator delivers. Every Nations product we sell is held to the strictest quality standards in the industry. We only use 100% brand new USA made components along with one of the most rigorous testing before each individual alternator leaves our shop. Each XP series alternator comes standard with our custom hard-anodized billet aluminum pulley and 2-year replacement warranty. If you're looking for a significant overall increase in top end and idle output, the XP series alternator is your solution.

Quick Overview

Mounting Type Direct fit to OEM Mounting
Output Voltage 14.8
Idle Amperage 200
Hot Idle Amperage @ 200ºF 180
Max Amperage 270
Hot Max Amperage @ 200ºF 250
Pulley 6 Groove Hard Anodized 6061
Doesn't affect vehicles PCM, Check Engine Light or Charge Light Yes - Direct plug-in OEM PCM Compliant
SKU 8237-270-XP
Positive Output Stud Size 8MM x 1.25 Copper
Temperature Compensation Yes with 3-Step Thermal Protection
Rectifier 12 50 amp press fit diodes
Rectifier Heatsink Aluminum
Warranty Duration 2 Years


Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 1 Write a review.

  0 of 0 people found the following review helpful:
 
5 of 5 High amp alternator June 23, 2025
Reviewer: I.T. Breeze from Durham, NC  
i ordered this alternator on Thursday after 2:00 pm - I received it 11:00 am Saturday  - It was for my 2005 Roadtrek 210 poplar Chevy Express - I have a 100 amp DC to DC charger that I added - This alternator works very well - It charge my engine battery at 14.76 - The set up was easy because of the adapter harness added to the alternator - thanks to Seth - Thank you

Was this review helpful to you?