Turbo Downpipe / used
Seller: Marketplace seller
$188
Asking
Quick reference
Identify
- Service part
- Pending
- Block casting
- Pending
- VIN digit 8
- Pending
Years
- Application
- 1990-1993 versus 1994-1996 distinctions: OBDII vehicles added secondary oxygen sensor bungs that can trigger CELs if swapped onto earlier ECUs without modification
Power
- Engine
- 3L V6 Twin Turbo VG30DETT (300hp)
- Codes
- Pending
- Inventory
- $188-$254 asking
What to know before swapping
Front and rear bank downpipes are not interchangeable left-to-right due to turbo positioning and flange orientation
1994-1996 OBDII models feature additional oxygen sensor bungs not present on 1990-1993 OBDI models
JDM Fairlady Z may utilize different catalyst configurations or oxygen sensor thread pitches
Context
Read the full notes
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Context
Read the full notes
The Nissan VG30DETT utilizes a true twin-turbo architecture requiring distinct front (20010-30P01/40P01) and rear (20010-30P02/40P02) downpipes. When hunting Z32 chassis at junkyards, confirm you're sourcing from Twin Turbo models—VG30DE naturally aspirated cars employ completely different flange geometries and routing that won't mate to DETT turbos. Prioritize 1990-1993 versus 1994-1996 distinctions: OBDII vehicles added secondary oxygen sensor bungs that can trigger CELs if swapped onto earlier ECUs without modification. Inspect flex bellows sections for stress cracking and turbine outlet flanges for warping; these components endure extreme thermal cycling that fatigues the 2mm stainless sections. Installation demands fresh crush gaskets (14465-10V00) and strategic maneuvering of the rear bank past the steering shaft. While aftermarket downpipes eliminate restrictive pre-catalysts for significant flow gains, retain OEM units for emissions testing compliance in regulated regions.
OEM numbers
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Confirmed fitment
Applications
| Year | Make | Model | Engine | Confidence |
|---|---|---|---|---|
| 1991 | Nissan | 300ZX | 3L V6 Twin Turbo VG30DETT (300hp) | 80% |
Available parts
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