Fits the following:
• 1966-70 Fairlane 428
• 1961-62 full-size Ford 390
• 1966-67 full-size Ford 390 and 410 - at heat riser
• 1966-70 full-size Ford 428
• 1961-62 Thunderbird 390
• 1966-67 Thunderbird 390 and 410 - at heat riser
• 1966-70 Thunderbird 428
• 1966-67 full-size Mercury 390 and 410 - at heat riser
Requires 2 to 3 per vehicle.