Is this a replacement for a 7641 OEM battery

Not sure about that but it's was a upgraded replacement for my 2010 escalade

Is it also a replacement for a AC Delco OE 8542 ?

I have a 2007 Chevy Silverado LT LMM 6.6 with two of the 8542's, I now have two of these AGM batteries installed and they are great! Took a couple days of driving around for the meter to finally settle into it's old charged spot, but they are a perfect fit.

Why is amazon saying this does not fit 2021 gmc canyon denali but ac delhi says it’s oe replacement. who’s correct?

Upon checking this part shows fit to 2021 GMC Terrain but to make sure you can contact the ACDelco manufacturer for further fitment option for the part

Will this fit a 2017 camaro SS?

If the group size is the dame, you need to see if the battery posts are top mount or side mount. The side mount batteries have a different model number

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🔋 Power your drive with confidence — never get left behind!

BUILT TO ENDURE - Robust envelope separator prevents shorts and boosts acid circulation for cooler, longer battery life
PEACE OF MIND WARRANTY - 36-month free replacement period keeps you covered and worry-free
NEXT LEVEL CONDUCTIVITY - Calcium lead positive grid minimizes resistance, maximizing performance under pressure
POWER THAT LASTS LONGER - 70 Amps of reliable, high-density energy for your vehicle’s start/stop demands
MAINTENANCE FREE CONFIDENCE - AGM design ensures 100% leak-proof, spill-proof operation with oxygen recombination technology

The Rain smaller Adapter TT288 by ACDelco is a high-performance AGM automotive battery delivering 70 Amps with advanced materials like a calcium lead positive grid and puncture-resistant separators. Designed for start/stop vehicles, it offers maintenance-free, leak-proof operation and a 36-month free replacement warranty, ensuring extended cycle life and reliable power under demanding conditions.

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Manufacturer	ACDelco
Brand	ACDelco
Product Dimensions	30.23 x 19.05 x 19.3 cm; 19.35 kg
Item model number	48AGM
Manufacturer part number	88864541
OEM Part Number	88864541
Amperage	70 Amps
Item Weight	19.3 kg

Rain smaller Adapter TT288

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