Vibrant 14618 Mild Steel Exhaust Manifold Flange VW Audi 1.8T 1/2 in. Thick

Vehicle Fitment

• 1999-2005 Volkswagen Beetle (1.8T GLS, GLX, GL, Sport, Turbo S) - 1.8T 4-Cyl.
• 2014-2016 Volkswagen Beetle (Base, Classic, Denim, Dune, S, SE, SEL, Fleet, Wolfsburg) - 1.8T 4-Cyl.
• 2000-2006 Volkswagen Golf GTI (GLS, GTI 1.8T, 20th Anniversary, 337) - 1.8T 4-Cyl.
• 2015-2016 Volkswagen Golf (Base, S, SE, SEL, Launch Edition) - 1.8T 4-Cyl.
• 2015-2016 Volkswagen Golf SportWagen (S, SE, SEL) - 1.8T 4-Cyl.
• 2000-2005 Volkswagen Jetta (GLS, GL, GLI) - 1.8T 4-Cyl.
• 2014-2015 Volkswagen Jetta SE - 1.8T 4-Cyl.
• 2014-2016 Volkswagen Passat (S, SE, SEL, SEL Premium, R-Line, Sport, Limited Edition) - 1.8T 4-Cyl.
• Compatible with all Volkswagen and Audi 1.8T 4-cylinder engine variants.

Fitment Notes

• Fits all VW/Audi 1.8T 4-cylinder engine variants across all platforms and generations.
• Port sizing is optimized for use with Schedule 10 or Schedule 40 pipe - not standard wall round tubing. See stainless variant 1460V for standard wall round tubing port sizing.
• Sold individually. One flange per purchase.
• When mating to 304 stainless steel tubing, 309L welding filler rod is recommended.
• Stainless steel equivalent (3/8 in. thick, standard wall round tubing): part number 1460V.

Features

• Precision laser cut HRPO (Hot Rolled Pickled and Oiled) mild steel for consistent port accuracy and weldability
• 1/2 in. (0.500 in.) thick construction provides added rigidity over the 3/8 in. stainless variant
• Port sizing matched to VW/Audi 1.8T cylinder head outlet geometry and optimized for Schedule 10 or 40 pipe
• HRPO surface finish arrives clean and weld-ready with minimal prep required
• Machined mating surface ensures a tight, leak-free seal against the cylinder head
• Suitable for naturally aspirated and forced induction header and turbo manifold builds on 1.8T platforms
• Cost-effective mild steel alternative to the stainless 1460V for Schedule pipe applications
• Backed by Vibrant's 1-year limited warranty

Specifications

• Part Number: 14618
• Material: HRPO Mild Steel
• Engine Fitment: Volkswagen / Audi 1.8T 4-Cylinder (All Variants)
• Flange Thickness: 1/2 in. (0.500 in.)
• Port Sizing: Optimized for Schedule 10 or Schedule 40 pipe
• Finish: Raw (HRPO)
• Quantity: Sold Individually
• Stainless Equivalent: Vibrant 1460V (3/8 in., standard wall round tubing)
• Warranty: 1 Year Limited Warranty

Included Components

• 1x Vibrant 14618 Exhaust Manifold Flange, VW/Audi 1.8T, HRPO Mild Steel, 1/2 in. Thick

Product Description

The Vibrant 14618 is a precision laser-cut HRPO mild steel exhaust manifold flange designed for the Volkswagen and Audi 1.8T four-cylinder engine across all platforms and generations. At 1/2 in. thick, it offers greater rigidity than the 3/8 in. stainless variant (1460V), making it a preferred choice for turbo manifold fabrication where the heavier flange better resists warping at the cylinder head sealing surface under high thermal loading. Port sizing is optimized for Schedule 10 or Schedule 40 pipe - the thicker-wall pipe commonly used in performance 1.8T manifold builds.

The HRPO surface finish requires minimal preparation before welding and accepts MIG or TIG with standard mild steel consumables. When joining to stainless tubing, 309L filler rod is recommended for a corrosion-resistant weld joint. Compatible with all 1.8T engine variants across the Beetle, Golf, Jetta, Passat, and Golf SportWagen platforms. Builders using standard wall round tubing should select the stainless steel variant (part number 1460V). Sold individually.