EMPI Hi-Performance Dual Port Cylinder Head | VW Type 1 Aircooled | 85.5mm, SS Valves, 3-Angle (98-1373-B)
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EMPI Hi-Performance Dual Port Cylinder Head — 85.5mm Bore, Stainless Valves, 3-Angle Valve Job (98-1373-B)
The EMPI 98-1373-B is a Hi-Performance dual-port cylinder head for stock 85.5mm air-cooled VW Type 1 engines (Beetle 1971–1979, Karmann Ghia 1971–1974, Type 3 1971–1973, Thing 1973–1974). It is built on the 98-1355-B casting with stainless Manley valves (35.5mm intake / 32mm exhaust), hi-rev springs, chromoly retainers, bronze guides and a 3-angle valve job. Sold each.
Part numbers: EMPI 98-1373-B · based on EMPI 98-1355-B casting · OE reference 043 101 355 CK / 043101355CK / 043-101-355CK · UPC 707924472349
Fitment
| Years | Vehicle | Notes |
|---|---|---|
| 1971–1979 | VW Beetle | Dual-port, 85.5mm bore |
| 1971 | VW Bus (Type 1 dual-port engine) | Dual-port, 85.5mm; later Bus with Type 4 engine not confirmed |
| 1971–1974 | VW Karmann Ghia | Dual-port, 85.5mm |
| 1971–1973 | VW Type 3 | Dual-port, 85.5mm |
| 1973–1974 | VW Thing | Dual-port, 85.5mm |
| — | Not confirmed | Single-port engines, big-bore 90.5/92/94mm builds, Type 4 engines |
Specifications
| Spec | Detail |
|---|---|
| Bore | 85.5mm, dual-port casting (98-1355-B based) |
| Valves | 35.5mm intake / 32mm exhaust, stainless Manley |
| Springs | Hi-rev single valve springs |
| Retainers / keepers | Chromoly retainers, hardened keepers |
| Valve guides | Bronze |
| Valve job | 3-angle performance |
| Chamber volume | 51cc |
| Intake port volume | 53cc |
| Exhaust port volume | 56.5cc |
| Spark plug thread | 14mm x 1/2" |
| Material | Special aluminum alloy, fully repairable |
| Competition | SCORE approved for Class 11 |
| Quantity | Sold each |
| Shipping dimensions | 12 x 9 x 7 in |
What's included
- One assembled Hi-Performance dual-port cylinder head (sold each)
Not included
- Lash caps (P/N 00-4006-0) — required with stainless valves, sold separately
Why it matters
Stock heads work, but this head adds stainless valves and a stronger valvetrain without going full race. The stainless Manley valves, hi-rev springs and chromoly retainers suit a street engine that sees higher rpm, and the 3-angle valve job improves flow over the stock head.
Installation notes
- Lash caps (P/N 00-4006-0) are required for all stainless steel valve applications — sold separately.
- Sold each: order two for a complete engine.
Frequently Asked Questions
What makes the EMPI 98-1373-B a Hi-Performance head?
It adds stainless Manley valves, hi-rev springs, chromoly retainers, bronze guides and a 3-angle valve job over the stock 98-1355-B based head.
Do I need lash caps with the EMPI 98-1373-B head?
Yes. Lash caps (00-4006-0) are required with stainless valves and are sold separately.
What bore does the EMPI 98-1373-B cylinder head fit?
It fits stock 85.5mm dual-port Type 1 engines. Big-bore 90.5/92/94mm builds are not confirmed for this head.
Is the EMPI 98-1373-B sold each or as a pair?
It is sold each, so a complete engine needs two.
What are the chamber and port volumes of the 98-1373-B?
Chamber volume is 51cc, intake port volume 53cc and exhaust port volume 56.5cc.
What is the part number and UPC?
EMPI 98-1373-B, UPC 707924472349.
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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.
