S4E05 Bosch S4E EFB (027EFB) Heavy Duty Car Battery 4 Year Warranty. S4 E05 - 027EFB BATTERY. EFB TECHNOLOGY. FROM THE BOSCH BLUE RANGE. AB31 - AB38, AB40 - AB56, KW1 - KW17, PA20 - PA78, PH4 - PH50, IV, HS, ZE, TR21-25, KA27-KA28, PO, JE, IM, BT, Channel Islands.
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