Part category
Electrical Parts
Alternators, starters, control modules, sensors, switches, and wiring — identified by part number and VIN.
- Cars, SUVs & trucks
- OEM & aftermarket options
- Ships to all 50 states
Electrical parts are among the easiest to get wrong. Two alternators can look the same but have different amperage ratings, and many control modules are tied to specific options or software. The part number on your original component is often the single most useful piece of information.
Rock Sales Parts helps U.S. drivers and DIY mechanics source electrical components for cars, SUVs, and trucks. Call us with your vehicle details and, ideally, the part number from your current part.
Electrical Parts we can help you source
- Alternators
- Starters
- Batteries, where available
- Engine and powertrain control modules (ECM/PCM)
- Body control modules and other control units
- Oxygen, mass airflow, ABS, and other sensors
- Switches and relays
- Wiring harnesses and connectors
- Fuse and relay boxes
This list is not exhaustive. If the part you need is not listed, call us — we will tell you whether we can help.
Before you order
Modules may need programming
Many control modules must be programmed or configured to your vehicle after installation. Plan for programming by a dealer or a qualified shop with the right equipment, and send us the part number from your original module when possible.
Higher-output alternators
Vehicles equipped with towing, heavy-duty, or extra-equipment packages may use higher-output alternators. The amperage on your original unit helps us match it.
Need Electrical Parts? Call us.
Read us your VIN or your year, make, and model, and tell us what you need. We will help identify the right part and let you know what we can find.
FAQ
Electrical Parts: common questions
Will a replacement module work without programming?
Some modules work once installed, but many need programming or setup for your vehicle. We help you find the correct part number; programming is typically done by a dealer or qualified shop.
Can you find an alternator for a truck with a towing package?
Yes. Tell us about the towing or heavy-duty package and read us the amperage from your original alternator if you can.
Where do I find a part number on an electrical part?
Look for a printed label or stamp on the part housing. Take a clear photo — you can email it to us so we can help read it.
Keep exploring
Related part categories
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Engine Parts
Complete engines and long blocks · Cylinder heads and valve covers · Timing belts, chains, tensioners, and guides -
Lighting Parts
Headlight assemblies · Tail light assemblies · Fog lights and fog light bezels -
Interior Parts
Seats and seat components · Window switches and switch panels · Window regulators and motors -
Heating & A/C (HVAC) Parts
A/C compressors and clutches · Condensers · Evaporators