Yeah I replaced mine a few weeks ago too. Autozoned it with the biggest duralast they had. 7 year warranty, free replacement first 3 years. I LOVE getting to the battery in 29 degree weather. LOL. But, its good to go for hopefully many more years! 187,000.

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740iLDUKE
01' DINAN 7 S62 Swap - Stratus Grau
(1587 produced in SG 440)
02' 4.6is DINAN X5 S2 Supercharged
833/3258 produced | 1/27 Dinan X5's