Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
Installation Guides
FREE 1 to 3-Day Delivery on Orders $149+ Details
Features, Description, Reviews, Q&A, Specs & Installation
More Power. The SR Performance 200 Amp Alternator produces 100+ amps at an idle (2000 alternator shaft RPM) and 200+ amps at maximum (6000 alternator shaft RPM). Designed for highly (electrically) modified cars - this alternator will significantly increase the charging capacity at all RPM Ranges with no modifications when upgrading from smaller units.
Peace of Mind. Why waste your time and money rebuilding your alternator again and again when it will only fail? Replace your faulty alternator with a brand new high performance one from SR Performance for peace of mind.
Required Upgrade. In order to properly use this 200 Amp Alternator, you are required to upgrade to a Premium Power 4 Gauge Wire Kit. This is because the OEM wire was not designed to carry the larger charging capacities of higher Amp alternators. See the Buy Together section above.
Application. The SR Performance 6G Series 200 Amp Alternator is a direct fit replacement with no mounting bracket modifications required to be installed on 2005-2008 GT Mustang models. The stock belt can be used on original equipment vehicles.
SR Performance SR2158WHO
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation Info
Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
Installation Guides
What's in the Box
SR Performance offers our valued customers the following Limited Warranty on all SR Performance product purchased after September 1st, 2026.
What is Covered
Subject to the terms, exclusions and limitations herein, and with respect only to products first sold in the United States, SR Performance warrants that its products shall be free of manufacturing defects for three (3) years from the date of initial retail purchase when the SR Performance product is installed and used on purchaser's vehicle according to supplied product installation instructions and/or warnings. This Limited Warranty is made only with respect to the initial purchaser and is not transferrable. SR Performance reveserves the right to require proof of purchase as a condition of this Limited Warranty and to make future revisions to this product or its Limited Warranty without obligation to provide notice of same to purchaser or to conform existing product to future revisions. Any change to this warranty made after purchase may be applied retroactively at the sole discretion of SR Performance.
What is Not Covered
Your SR Performance Limited Warranty does not cover damage or claims to any component, vehicle, or person other than the SR Performance product purchased. Your Limited Warranty is expressly limited to replacement of the item itself shall SR Performance determine item was not free of defect. As such, this Limited Warranty does not cover damage or claims to any component, vehicle, or person SR Performance determines to have been damaged by or subjected to:
Remedy Limited to Repair/Replacement:
The exclusive remedy provided for products covered under this Limited Warranty shall be, upon SR Performance’s inspection and at SR Performance’s option, either repair or replacement of product or parts (new or refurbished). Any parts repaired or replaced will be considered part of the original product and will not extend the term of Limited Warranty. Customers requesting warranty consideration should first contact the independent distributor selling your product to obtain a Returned Goods Authorization number. All removal, shipping, and installation costs are customer's responsibility. If a replacement part is needed before your part can be returned, you must first purchase the replacement part. Then, if SR Performance determines the part warrantable, you will be credited the purchase price of that part.
This warranty is the only warranty made in connection with the purchase of this product. SR Performance neither assumes nor authorizes any manufacturer, vendor, retailer, other person or entity to assume for it any other obligation or liability in connection with its products or this Limited Warranty.
Other Limitations - Exclusion of Damages - Your Rights Under State Law: