VW CIS Intake Boot Replacement – OEM Reference 027 113 357A (Mk1 / Mk2 Volkswagen)

Part Number: AUT-MK1-007

Restore proper airflow and drivability in your classic Volkswagen with this Performance Silicone CIS Intake Boot, designed as a direct replacement for OEM part number 027 113 357A. Built to replace cracked, dry-rotted factory rubber, this upgraded silicone boot improves reliability while maintaining correct airflow characteristics for CIS-equipped engines.

Ideal for aging VW builds where factory intake components commonly fail, this boot helps restore smooth idle quality, throttle response, and overall engine efficiency.

Features

• Direct replacement for OEM part number 027 113 357A
• High-quality performance silicone construction
• Designed for CIS (Continuous Injection System) applications
• Resistant to cracking, drying, and heat degradation
• Improves idle stability and throttle response
• Restores proper airflow to intake system
• Longer service life compared to OEM rubber components
• Suitable for restoration or performance builds

Fitment

Compatible with many Volkswagen CIS-equipped models, including:

• 1974–1983 Volkswagen Golf Mk1
• 1979–1984 Volkswagen Jetta Mk1
• 1974–1981 Volkswagen Scirocco Mk1
• 1983–1992 Volkswagen Golf Mk2
• 1984–1992 Volkswagen Jetta Mk2

⚠️ Always verify OEM part number fitment before purchase.

Installation Notes

• Direct-fit replacement in most applications
• Minor trimming may be required depending on intake configuration or aftermarket components
• Professional installation recommended for best sealing and alignment

What's Included

• (1) Silicone CIS Intake Boot

Performance Benefit

Replacing a deteriorated intake boot helps eliminate unmetered air leaks, improving idle quality, throttle response, and overall engine drivability in CIS-equipped Volkswagen engines.