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This usually takes 5-15 seconds. We're pulling together fitment data,
OEM numbers, and community knowledge...
Dusting off the service manual...
💡 This page improves over time as the community adds casting photos and confirms fitment
Rear Parking Sensor Set
This usually takes 5-15 seconds. We're pulling together fitment data,
OEM numbers, and community knowledge...
Dusting off the service manual...
💡 This page improves over time as the community adds casting photos and confirms fitment
Quick reference
Factory rear parking sensors were not available on 1991 300ZX models; this data assumes aftermarket or JDM dealer-installed accessories
JDM market late-model Z32 (1997-2000) may have had factory sonar options with different part numbers; verify connector compatibility
Part numbers provided follow Nissan format but require physical verification against vehicle harness
Context
The 1991 Nissan 300ZX VG30DETT (Z32 chassis) did not feature factory rear parking sensors as standard or optional equipment in the USDM market. Components like 25994-40P05 typically represent aftermarket retrofit kits (Cobra, Rostra, or early Nissan Accessories) requiring bumper cover drilling and custom wiring harness integration. When junkyard hunting, verify part number 999U2-Z3201 on the control module label—early 1990s Nissan accessory sensors share the 20mm diameter housing with later Altima/Maxima units but use distinct two-pin connectors. Inspect sensor heads for UV cracking on the epoxy face, a common failure mode on 30-year-old ultrasonic units. Installation requires removal of the rear bumper cover; the VG30DETT twin-turbo intercooler ducting may interfere with module placement behind the license plate recess.
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Confirmed fitment
| Year | Make | Model | Engine | Confidence |
|---|---|---|---|---|
| 1991 | Nissan | 300ZX | VG30DETT | 80% |
Available parts

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The wiki gets better with every install.
Sign in to contributeVG30DETT twin-turbo models have unique rear bumper ducting that may affect sensor mounting locations compared to NA models
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