Part #121002 - Engine Tuning Chip - Power Chips| Hypertech – Hypertech, Inc.

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121002: Thermo Master For 1991 Astro/Safari 4.3 TBI Automatic Transmission

121002: Thermo Master For 1991 Astro/Safari 4.3 TBI Automatic Transmission

Emissions Certifications: Not for sale or use in California

Part #121002: Thermo Master For 1991 Astro/Safari 4.3 TBI Automatic Transmission

    • Automatic
    • Cooling Fans 160 degrees (if equipped with electirc cooling fans)

WARNING: Cancer and reproductive harm. Visit www.p65warnings.ca.gov

PID: 6572384714947