Battery ground strap. Porsche 911 1974-1989

Battery ground strap.
This high-quality replacement for the factory cable connects the battery negative terminal to the body / chassis. It ensures proper electrical grounding for reliable engine starts, charging performance, and system stability.

Fits:
Porsche 911 - 1974 to 1989
Porsche 911 (930) turbo - 1975 to 1977

Diagram ref no 11

Built to original Porsche specifications, this premium replacement provides a clean, low-resistance connection between the battery and chassis. It eliminates voltage drops, improves starting reliability, and protects sensitive electronics — a simple but essential upgrade for any classic Porsche restoration.

Function: Provides low-resistance electrical connection between the battery and chassis
Installation: Direct OE replacement — simple bolt-on fitment, no modification required
Benefits: Restores consistent voltage flow, improves engine start reliability, prevents electrical faults

Why replacement matters:
•   Over time, the ground strap can corrode, fray, stretch, or lose integrity, resulting in increased resistance.
•   A poor ground connection can cause weak starts, erratic electronics, charging issues, voltage drops, or malfunctions in sensors and control modules.
•   Replacing with a high-grade replacement strap restores low-resistance grounding, ensuring stable electrical performance, improved startup reliability, and protection for sensitive electronics.
•   A proper ground strap is a simple but critical component — its failure may lead to cascading electrical faults, which can be difficult to diagnose.

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Related, superseded, cross reference or alternative numbers for comparison.

91161189900

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