Vaico V20-1374 Engine Intake Manifold Adjusting Unit

Engine Intake Manifold Adjusting Unit for BMW

Vaico V20-1374 is an engine intake manifold adjusting unit built for pressure-controlled operation at the intake manifold. It uses a Polyamid 6.6 housing, FPM/ACM seal materials, and includes a plug and seal for a direct replacement-style service part. This unit is listed for BMW 323Ci, 323i, 328Ci, 328i, 528i, and Z3 applications.

VAICO product line components are developed for European vehicle service work where accurate fitment and OE-style construction matter. For BMW intake manifold repair on 323i, 328i, or Z3 models, V20-1374 provides the specified housing dimensions and control-valve configuration needed for the intake manifold system.

• Part number: V20-1374
• Engine intake manifold adjusting unit with pressure-controlled operating mode
• Fitting position: intake manifold
• Housing material: Polyamid 6.6
• Seal material: FPM (fluoride rubber) / ACM (polyacrylate rubber)
• Includes plug and seal
• Dimensions: 235 mm length, 85 mm width, 135 mm height
• Control valve type for intake manifold adjustment service

Detailed Product Information

This intake manifold adjusting unit is used in BMW intake systems where manifold control affects engine airflow management and drivability. The V20-1374 is specified for the intake manifold location and is built with a pressure-controlled operating mode, a control valve, and a reinforced Polyamid 6.6 housing. The sealing materials are selected for engine-bay exposure, and the listed dimensions support proper replacement matching. If you are sourcing a BMW intake manifold adjusting unit for a 323Ci, 328i, or 528i, V20-1374 is the cataloged reference to verify against the original part.

This part cross-references BMW 1 432 557 and 1 440 049 for the same application.

Vehicle Fitment

• Fits 2000 BMW 323Ci, N/A
• Fits 1999-2000 BMW 323i, N/A
• Fits 2000 BMW 328Ci, N/A
• Fits 1999-2000 BMW 328i, N/A
• Fits 1999-2000 BMW 528i, N/A
• Fits 1998-2000 BMW Z3, N/A

Common Replacement Reasons

• Intake manifold control valve fault or sticking operation
• Vacuum or pressure-related intake manifold adjustment issues
• Rough idle or drivability concerns tied to manifold control
• Failed sealing at the intake manifold adjusting unit
• Replacement during BMW intake manifold service on E36, E39, or Z3 platforms

Installation Notes

Confirm the original part number, connector style, and intake manifold configuration before installation. Inspect the mating surfaces and seals for contamination or damage, and verify that the plug and seal are seated correctly during assembly. After installation, clear any stored fault codes and check for proper manifold control operation under engine load.

Quality Assurance

Vaico replacement components are cataloged for European vehicle service applications and are specified here with the listed dimensions, materials, and operating mode for accurate BMW fitment verification. Part number V20-1374 should be matched to the vehicle identification and original intake manifold hardware before installation.