Car Batteries for 2003 Porsche 911

Battery Size & Replacement for 2003 Porsche 911

Researching battery replacements for your Porsche 911? Use this chart to find the right battery size and CCAs for your Porsche 911.

Battery Engine Warranty Cold Cranking Amps
MT-91/T6 H6/3.6L Replacement 24 months Performance 60 months 590
MTP-48/H6 H6/3.6L Replacement 30 months Performance 72 months 760
MTX-94R/H7 H6/3.6L Replacement 36 months Performance 36 months 850
BATTERIES

H6/3.6L

- Battery: MT-91/T6

- Warranty: Replacement 24 months, Performance 60 months

- Cold Cranking Amps: 590

H6/3.6L

- Battery: MTP-48/H6

- Warranty: Replacement 30 months, Performance 72 months

- Cold Cranking Amps: 760

H6/3.6L

- Battery: MTX-94R/H7

- Warranty: Replacement 36 months, Performance 36 months

- Cold Cranking Amps: 850

Shopping for Porsche 911 Car Batteries

You can pretty much drive your Porsche 911 until you don't want to anymore. But your 911's battery? Don't count on it to last forever. On average, auto batteries last anywhere from three to five years. Don’t get stranded by your 911’s car battery. Replace it regularly instead! Look out for symptoms of a faulty car battery. A sluggish engine start, a blinking battery or check engine light, swollen battery case, corroded battery terminals, or dim headlights can all be signs that your battery needs attention.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. With best-in-class tools we can tell you how much "life" is left in your battery. Visit us for a complimentary battery check and, if necessary, a battery replacement to help keep your 2003 Porsche 911 running! Car batteries are only one of our many strong suits. Our technicians are familiar with Porsche-specific recommendations for 911 battery CCAs and reserve capacity. Get help identifying the type and size of battery that matches your vehicle, and schedule a weekday or weekend battery replacement service for your car.

Why Choose an Interstate Battery for Your 911?

Your Porsche 911 deserves the best, which is why we exclusively carry the best. We install more than 700,000 car batteries a year using outrageously dependable Interstate Batteries. Interstate has been a leader in car battery reliability, power, and innovation for many years. That’s why it’s unsurprising to find an Interstate Battery in the engine of a Porsche 911. Their entire line of powerful offerings can be found in boom lifts, commercial trucks, golf carts, and fishing boats. To run optimally, your 2003 Porsche 911 requires a dependable battery. That's Interstate: Outrageously Dependable®.

Caring for a New Porsche 911 Battery

Got a new car battery installed in your 2003 Porsche 911? Great job! Give your new car battery the best start with proper care. ensuring all the lights are turned off before you leave the car, limiting short trips, keeping your battery posts clean, and avoiding radio and electronic component use when the engine is off.

Answers to Your 911 Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a battery question that's unique to your Porsche 911 battery, stop by your nearest store. Our technicians have the answers.

  • Why won't my 911 battery stay charged? A car battery that needs to be jump-started every time is as good as dead. The battery might be old. Or, you’ve been leaving the doors slightly open and the cabin light at night. Stop by for a free battery test at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.
  • What do you do with my dead 911 battery? We’ll recycle your car battery for you!
  • What’s the cost of Porsche 911 batteries? Get affordable prices on Porsche 911 batteries by using one of our limited-time battery deals. Plus, every Interstate Battery comes with a maintenance-free performance warranty and limited-time free replacement.

Porsche 911 Batteries Near You

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2003 Porsche 911 today and schedule a quick installation at Firestone Complete Auto Care.