The 553 is an XS Power battery installation accessory. XS Power lists it as: I-BAR Marine Side and Top Terminal Adaptor with 5/16" and 3/8" Studs. The specifications below come directly from XS Power's June 2026 distributor data. Verify voltage, group size, polarity, dimensions, and application requirements before ordering.This Listing Includes: (1) XS Power 553 I-BAR Marine Side and Top Terminal Adaptor with 5/16" and 3/8"…Specifications Model 553 Product Type Terminals, Hardware & Hold-Downs Warranty 1 year UPC 692209012870 Package Length 3.5 in. Package Width 2.5 in. Package Height 10 in. Package Weight 3 lbs. Available from JS Alternators.PROP 65 WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. Wash hands after handling.For more information, visit www.P65Warnings.ca.gov.
