Dual Port Intake Boot, Stock Rubber for Beetle, RED Each

OVERVIEW

When it is time to seal up your air-cooled engine''s induction system, you cannot afford to overlook the integrity of your intake manifold boots. This EMPI Dual Port Intake Boot is a premium stock-style replacement designed specifically to bridge the gap between your center intake section and the dual-port end castings. In the world of VW performance, a vacuum leak is the silent killer of engine longevity and drivability. These boots are engineered from high-quality, heat-resistant rubber that provides the necessary flexibility to absorb engine vibrations while maintaining a rock-solid airtight seal. Whether you are performing a routine tune-up or a complete long-block overhaul, replacing these boots is a mandatory step in ensuring your 1600cc dual-port engine receives the correct air-fuel mixture without the interference of "false air" entering the system.

The vibrant red finish of these intake boots does more than just provide a custom look to your engine bay; it allows for easier visual inspections of the intake tract. Over decades of heat cycles and exposure to fuel vapors, original factory rubber boots often become brittle, cracked, or "mushy," leading to erratic idling, popping on deceleration, and dangerous lean-running conditions that can melt pistons. This EMPI boot (OEM part number reference 113-129-729B) is manufactured to exacting tolerances to ensure a snug fit over the beads of the intake pipes. By choosing this robust rubber coupler, you are investing in the reliability of your Volkswagen''s fuel delivery system, ensuring that every bit of atomized fuel from your Solex or progressive carburetor makes it into the combustion chamber where it belongs. Please note that while these are typically red, they are a vital component for any 1971 and later dual-port upright engine configuration.

FITMENT

This intake boot is designed for air-cooled Volkswagen models equipped with a 1600cc Dual Port engine and stock-style end castings. Fitment includes:

• VW Beetle: 1971, 1972, 1973, 1974, 1975, 1976, 1977 (Standard and Super Beetle)
• VW Karmann Ghia: 1971, 1972, 1973, 1974
• VW Type 2 Bus: 1971 (1600cc Dual Port models only)
• VW Thing (Type 181): 1973, 1974
• Custom Applications: Any dune buggy, sand rail, or kit car utilizing a VW Type 1 dual-port upright engine.

SPECS

Technical specifications for the EMPI Dual Port Intake Boot:

• Material: High-density, oil and heat-resistant pliable rubber.
• Color: High-visibility Red.
• Configuration: Straight coupler for dual-port intake manifolds.
• OEM Cross Reference: 113-129-729B.
• Inner Diameter: Precision molded to fit standard 1600cc end castings and center sections.
• Quantity: Sold individually (Note: Two boots are required per engine).
• Compatibility: Designed for use with original style hose clamps or T-bolt clamps.

PRO TIPS

1. The "Carb Cleaner" Vacuum Leak Test

If you suspect your current intake boots are failing but cannot see a visible crack, try the master technician''s trick. While the engine is idling, lightly spray a small amount of carburetor cleaner or starting fluid directly onto the rubber boots. If the engine RPM changeseither stumbling or revving upyou have a vacuum leak. This indicates the rubber has become porous or has a hairline fracture. When installing your new EMPI red boots, ensure the metal surfaces of the intake pipes are perfectly clean and free of old rubber residue or oil to ensure the best possible seal right out of the gate.

2. Proper Clamp Positioning and Tension

One of the most common mistakes when installing dual-port intake boots is over-tightening the clamps or using the wrong type of clamp. We highly recommend using wide-band worm-gear clamps or specialized intake clamps rather than thin, cheap alternatives that can "bite" into the rubber and cause premature failure. Position the clamps so they sit just behind the raised bead on the intake pipes. Tighten them until they are snug and the rubber begins to slightly bulge around the edges of the clamp, but do not crush the rubber. Over-tightening can actually cause the boot to "spit" off the manifold under the vacuum pressure of a backfire or simply cut through the material over time.

3. Alignment is Everything

Before you tighten your clamps down, it is critical to ensure that your intake manifold center section and the two end castings are perfectly aligned. If the center section is twisted or sitting too far to one side, it will put "side-load" on the rubber boots, stretching one side while wrinkling the other. This uneven tension leads to cracks within just a few hundred miles of driving. Loosen the 13mm nuts on the intake end castings at the cylinder heads, get the center section and boots perfectly centered and relaxed, and then tighten the end castings down first before finally securing the clamps on your new red intake boots.