Dorman Autograde Heater Bypass Vacuum Cap 3/4 In ID 5 Pack for Automotive Repair 493-101

Heater bypass vacuum caps with 3/4 inch inner diameter used to replace cracked or leaking factory caps in automotive cooling systems.

Built to meet the manufacturer's design intent for reliable service using high-quality materials engineered for long-lasting durability under daily driving conditions.

Key Features

• 3/4 inch inner diameter sized for standard heater bypass lines
• Constructed from high-quality materials for extended service life
• Sold as a convenient 5-piece pack for multiple repairs or spares
• Designed as a direct-fit replacement for original equipment
• Part number 493-101 ensures correct identification

Benefits

• Restores proper vacuum pressure to the heating system
• Prevents coolant leaks caused by deteriorated caps
• Reduces the risk of repeat repairs with durable construction
• Ensures smoother installation with OE-matching form and fit
• Provides cost-effective solution with multi-pack value
• Helps maintain consistent cabin temperature performance

Application

Ideal for DIY mechanics and professional technicians repairing heater core bypass lines on various makes and models requiring a 3/4 inch vacuum cap.

Fitment Notes

• Universal fit for vehicles requiring a 3/4 inch ID heater bypass cap
• Verify inner diameter measurement before installation

Why Choose Dorman - Autograde?

• Dorman parts are engineered as direct-fit replacements designed to match OE form fit and function
• Built with quality materials and validated through testing to stand up to daily driving demands
• Offers a smart way to restore your vehicle with confidence in fit durability and dependable performance

What's in the Box

• 5 Piece Heater Bypass Vacuum Cap Pack

Item Dimensions

• 3.7in x 2.4in x 2.2in
• 0.2lbs