Battery ground strap. Porsche 924 / 944 / 911 Turbo flatnose  ❭  477971221

Battery ground strap
This OE Match battery ground strap is a replacement earth strap used to connect the battery negative terminal to the vehicle body or chassis ground point. It is designed to match the original-style function and fitment for Porsche 924, 944, and 911 Turbo Flatnose models where this part number is specified.

Fits:
Porsche 924 - 1976 to 1985
Porsche 944 2.5ltr - 1982 to 1985
Porsche 911 turbo "Flatnose" - 1987 to 1989

Diagram ref no 5 (for 911) / 10 (for 924 / 944)

This battery ground strap fits at the battery area, connecting the negative battery terminal to the body or chassis earth point. Depending on the model, it may be located in the front battery compartment or battery mounting area as part of the main vehicle grounding system.

The battery ground strap provides the main electrical return path from the vehicle body back to the battery. A strong and clean ground connection is essential for reliable starting, charging, lighting, instruments, and general electrical system performance.

Functions
•  Connects the battery negative terminal to the body or chassis ground point
•  Completes the electrical circuit for the starting and charging systems
•  Helps provide stable voltage to electrical components
•  Supports reliable starter motor operation
•  Helps prevent intermittent electrical faults caused by poor grounding
•  Restores the correct battery earth connection during repair or restoration
•  OE Match replacement for worn, corroded, or damaged original ground strap

Battery ground straps can corrode, fray, loosen, or develop high resistance over time. A weak earth connection can cause slow cranking, starting problems, dim or flickering lights, charging issues, erratic gauges, or intermittent electrical faults. Replacing the ground strap helps restore a secure electrical connection and improves overall reliability.

When to replace
•  The original ground strap is corroded, frayed, cracked, or damaged
•  The battery negative connection is loose or heavily oxidised
•  The car has slow cranking or intermittent starting issues
•  Lights, instruments, or electrical systems behave erratically
•  Charging or voltage-related faults are present
•  The ground strap becomes hot under electrical load
•  The vehicle is undergoing battery, wiring, or restoration work
•  The original strap is missing or no longer provides a reliable ground

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

477971221

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