EMPI Hi-Performance Dual Port Cylinder Head 90.5/92mm 98-1374-B - Front
EMPI 98-1374-B - Combustion Chamber
EMPI 98-1374-B - Intake Port
EMPI 98-1374-B - Exhaust Port
EMPI Hi-Performance Dual Port Cylinder Head 90.5/92mm 98-1374-B - Front
EMPI 98-1374-B - Combustion Chamber
EMPI 98-1374-B - Intake Port
EMPI 98-1374-B - Exhaust Port
EMPI

EMPI Hi-Performance Dual Port Cylinder Head | VW Type 1 Aircooled | 90.5/92mm, SS Valves, 3-Angle (98-1374-B)

Not currently available

Not currently available.

This part is discontinued or out at our supplier. We often have used stock, a substitute, or can fabricate an alternative.

Call (657) 438-7002 or send us your chassis number.

No reviews
Usually ships within 24 hours
$452.55
Product details
  • Vendor EMPI
  • SKU 98-1374-B
  • Barcode 707924472356
  • Fits
    • All Years|VW|Beetle (dual-port engine, 90.5/92mm bore)
    • All Years|VW|Bus (dual-port engine)
    • All Years|VW|Karmann Ghia

Not sure it fits? Call the shop: (657) 438-7002.

Ask an expert

Description Shipping information Reviews

EMPI Hi-Performance Dual Port Cylinder Head — 90.5/92mm Bore, Stainless Valves, 3-Angle Valve Job (98-1374-B)

Building a 1776, 1835, or 1914 and want stainless valves without going to a full race head? This is the one. EMPI's Hi-Performance dual-port head (98-1374-B) is the proven 98-1355-B casting machined to fit 90.5mm and 92mm pistons, upgraded with stainless Manley valves, hi-rev springs, chromoly retainers, bronze guides, and a 3-angle valve job. SCORE-approved, sold each.

Vehicle Fitment

  • VW Beetle: dual-port performance builds, 90.5mm or 92mm bore (1776cc / 1835cc)
  • VW Bus: dual-port performance builds
  • VW Karmann Ghia: dual-port performance builds
  • VW Type 3: dual-port performance builds
  • VW Thing: dual-port performance builds

Not confirmed: stock 85.5mm or 94mm bore (use the matching-bore head), single-port engines, Type 4 engines.

Why Choose EMPI?

You get genuine parts backed by real support.

Key Features & Benefits

  • Machined for 90.5/92mm: direct fit for 1776cc and 1835cc builds.
  • Stainless Manley valves: 35.5mm intake / 32mm exhaust.
  • Upgraded valvetrain: hi-rev single valve springs, chromoly retainers, and hardened keepers.
  • Bronze valve guides: for durability.
  • 3-angle performance valve job: improved flow.
  • Special aluminum alloy: fully repairable.
  • Race-ready: SCORE approved for Class 11 competition.
  • Sold each.

Technical Specifications

  • Bore: 90.5mm / 92mm, dual port casting (98-1355-B based)
  • Valves: 35.5mm intake / 32mm exhaust, stainless Manley
  • Chamber Volume: 51cc
  • Intake Port Volume: 53cc
  • Exhaust Port Volume: 56.5cc
  • Spark plugs: 14mm x 1/2"
  • Part Number: 98-1374-B (UPC 707924472356)

Important: Lash caps (P/N 00-4006-0) are required for all stainless steel valve applications — sold separately.

Frequently Asked Questions

  • What bore are these machined for? 90.5mm and 92mm pistons.
  • What displacements? 1776cc (90.5mm) and 1835cc (92mm) builds.
  • Do I need lash caps? Yes — required with stainless valves, sold separately (00-4006-0).
  • Sold each or as a pair? Each.
  • What's the part number? EMPI 98-1374-B (UPC 707924472356).
  • Are you an authorized dealer? Yes.

Explore Related Categories

Build your air-cooled VW engine with more from our catalog: Engine Parts, Engine, and the full EMPI lineup.

Prop 65 Warning

WARNING: This product can expose you to chemicals including lead which are known to the State of California to cause cancer and reproductive harm. For more information, go to www.P65Warnings.ca.gov. Wash hands following installation or before eating. All parts legal for use on pre-pollution controlled vehicles only.