Holstein 2OPS0078 Engine Oil Pressure Switch

Brand	Holstein 2OPS0078
Product line	Holstein Parts
Fits	Buick, Cadillac, Chevrolet, GMC, Isuzu, and Oldsmobile · 205 vehicles

Direct replacement. Built for gauge-equipped engine oil pressure applications.

Broad GM coverage. Fits many Chevrolet and GMC trucks, vans, and SUVs.

Holstein Parts. Replacement electrical component identified by part number 2OPS0078.

Cross-references Anchor 8193, 1S6632 and 501208 for the same application. See all 13.

$27.67Free shipping

In stock · usually ships same day before 1pm CST

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Free return shipping if it doesn't fit when you check fitment here first.

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Step 2 — Quantity

Free shipping to the continental U.S.

Free returns within 60 days if it doesn't fit when fitment is verified.

Engine Oil Pressure Switch Overview

This Holstein engine oil pressure switch is a direct-fit replacement for gauge-equipped applications that need accurate oil pressure signal input. It is listed for a wide range of Chevrolet, GMC, Cadillac, Oldsmobile, and Isuzu models, including Chevrolet Silverado 1500, GMC Sierra 1500, and Chevrolet Astro applications.

Key Features

Engine oil pressure switch for gauge-equipped vehicles
Direct replacement format for listed applications
Broad coverage across GM truck, van, and SUV platforms
Holstein Parts replacement component
Part number 2OPS0078 for catalog and fitment lookup

Detailed Description

Holstein 2OPS0078 is an engine oil pressure switch used in gauge-equipped vehicles where the oil pressure sender signal is monitored by the instrument cluster. The fitment includes many Chevrolet and GMC trucks, vans, and SUVs, along with select Cadillac, Oldsmobile, Buick, and Isuzu models. For buyers searching for an oil pressure switch for Chevrolet Silverado 1500, GMC Sierra 1500 oil pressure switch fitment, or a replacement for Chevrolet Astro and GMC Safari gauge applications, this part number provides a focused match for the listed vehicles. This part cross-references Anchor 8193 for the same application.

Common Issues It May Address

Inaccurate or unstable oil pressure gauge readings
Oil pressure warning behavior caused by a failing sender
Intermittent gauge response from a worn switch
Loss of oil pressure signal to the instrument cluster

Installation Notes and Tips

Verify the vehicle is listed with a gauge application before ordering. Match the connector style and thread specification to the original part during replacement. Confirm the part number 2OPS0078 against the existing component and vehicle service information before installation.

Quality Assurance

Holstein Parts supplies replacement electrical and engine management components for aftermarket service applications. Use the listed fitment data to confirm compatibility before installation.

This part fits 205 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Fuel Type	Notes
2006	GMC	Sierra 1500	4.3L	V6	—	with Gauge; Holstein Parts
2006	GMC	Sierra 2500 HD	8.1L	V8	—	with Gauge; Holstein Parts
2006	GMC	Sierra 3500	8.1L	V8	—	with Gauge; Holstein Parts
2005	Chevrolet	Astro	—	—	—	with Gauge; Holstein Parts
2005	Chevrolet	Blazer	—	—	—	with Gauge; Holstein Parts
2005	Chevrolet	Express 1500	4.3L	V6	—	with Gauge; Holstein Parts
2005	Chevrolet	Express 2500	4.3L	V6	—	with Gauge; Holstein Parts
2005	GMC	Safari	4.3L	V6	—	with Gauge; Holstein Parts
2005	GMC	Savana 1500	4.3L	V6	—	with Gauge; Holstein Parts
2005	GMC	Savana 2500	4.3L	V6	—	with Gauge; Holstein Parts
2005	GMC	Sierra 1500	4.3L	V6	—	with Gauge; Holstein Parts
2005	GMC	Sierra 2500 HD	8.1L	V8	—	with Gauge; Holstein Parts
2005	GMC	Sierra 3500	8.1L	V8	—	with Gauge; Holstein Parts
2004	Chevrolet	Astro	—	—	—	with Gauge; Holstein Parts
2004	Chevrolet	Blazer	—	—	—	with Gauge; Holstein Parts
2004	Chevrolet	Express 1500	4.3L	V6	—	with Gauge; Holstein Parts
2004	Chevrolet	Express 2500	4.3L	V6	—	with Gauge; Holstein Parts
2004	Chevrolet	S10	—	—	—	with Gauge; Holstein Parts
2004	GMC	Safari	4.3L	V6	—	with Gauge; Holstein Parts
2004	GMC	Savana 1500	4.3L	V6	—	with Gauge; Holstein Parts
2004	GMC	Savana 2500	4.3L	V6	—	with Gauge; Holstein Parts
2004	GMC	Sierra 1500	4.3L	V6	—	with Gauge; Holstein Parts
2004	GMC	Sierra 3500	8.1L	V8	—	with Gauge; Holstein Parts
2004	GMC	Sonoma	—	—	—	with Gauge; Holstein Parts
2003	Chevrolet	Astro	—	—	—	with Gauge; Holstein Parts
2003	Chevrolet	Blazer	—	—	—	with Gauge; Holstein Parts
2003	Chevrolet	S10	—	—	—	with Gauge; Holstein Parts
2003	Chevrolet	Silverado 1500	4.3L	V6	—	with Gauge; Holstein Parts
2003	GMC	Safari	—	—	—	with Gauge; Holstein Parts
2003	GMC	Sierra 1500	4.3L	V6	—	with Gauge; Holstein Parts
2003	GMC	Sonoma	—	—	—	with Gauge; Holstein Parts
2002	Chevrolet	Astro	—	—	—	with Gauge; Holstein Parts
2002	Chevrolet	Avalanche 2500	—	—	—	with Gauge; Holstein Parts
2002	Chevrolet	Blazer	—	—	—	with Gauge; Holstein Parts
2002	Chevrolet	C3500HD	8.1L	V8	—	with Gauge; Holstein Parts
2002	Chevrolet	Express 1500	5.7L	V8	—	with Gauge; Holstein Parts
2002	Chevrolet	Express 2500	5.7L	V8	—	with Gauge; Holstein Parts
2002	Chevrolet	Express 3500	8.1L	V8	—	with Gauge; Holstein Parts
2002	Chevrolet	S10	—	—	—	with Gauge; Holstein Parts
2002	Chevrolet	Silverado 1500	4.3L	V6	—	with Gauge; Holstein Parts
2002	Chevrolet	Silverado 2500 HD	8.1L	V8	—	with Gauge; Holstein Parts
2002	Chevrolet	Silverado 3500	8.1L	V8	—	with Gauge; Holstein Parts
2002	Chevrolet	Sonora	5.7L	V8	—	with Gauge; Holstein Parts
2002	Chevrolet	Suburban 2500	8.1L	V8	—	with Gauge; Holstein Parts
2002	GMC	C3500HD	8.1L	V8	—	with Gauge; Holstein Parts
2002	GMC	Safari	—	—	—	with Gauge; Holstein Parts
2002	GMC	Savana 1500	—	—	—	with Gauge; Holstein Parts
2002	GMC	Savana 2500	—	—	—	with Gauge; Holstein Parts
2002	GMC	Savana 3500	—	—	—	with Gauge; Holstein Parts
2002	GMC	Sierra 1500	4.3L	V6	—	with Gauge; Holstein Parts
2002	GMC	Sierra 2500 HD	8.1L	V8	—	with Gauge; Holstein Parts
2002	GMC	Sierra 3500	8.1L	V8	—	with Gauge; Holstein Parts
2002	GMC	Sonoma	—	—	—	with Gauge; Holstein Parts
2002	GMC	Yukon XL 2500	8.1L	V8	—	with Gauge; Holstein Parts
2001	Chevrolet	Astro	—	—	—	with Gauge; Holstein Parts
2001	Chevrolet	Blazer	—	—	—	with Gauge; Holstein Parts
2001	Chevrolet	C1500	4.3L	V6	—	with Gauge; Holstein Parts
2001	Chevrolet	C3500HD	8.1L	V8	—	with Gauge; Holstein Parts
2001	Chevrolet	Express 1500	5.7L	V8	—	with Gauge; Holstein Parts
2001	Chevrolet	Express 2500	5.7L	V8	—	with Gauge; Holstein Parts
2001	Chevrolet	Express 3500	8.1L	V8	—	with Gauge; Holstein Parts
2001	Chevrolet	P30	4.3L	V6	—	with Gauge; Holstein Parts
2001	Chevrolet	S10	—	—	—	with Gauge; Holstein Parts
2001	Chevrolet	Silverado 1500	4.3L	V6	—	with Gauge; Holstein Parts
2001	Chevrolet	Silverado 2500 HD	8.1L	V8	—	with Gauge; Holstein Parts
2001	Chevrolet	Silverado 3500	8.1L	V8	—	with Gauge; Holstein Parts
2001	Chevrolet	Sonora	5.7L	V8	—	with Gauge; Holstein Parts
2001	Chevrolet	Suburban 2500	8.1L	V8	—	with Gauge; Holstein Parts
2001	GMC	C3500HD	8.1L	V8	—	with Gauge; Holstein Parts
2001	GMC	Jimmy	—	—	—	with Gauge; Holstein Parts
2001	GMC	Safari	—	—	—	with Gauge; Holstein Parts
2001	GMC	Savana 1500	—	—	—	with Gauge; Holstein Parts
2001	GMC	Savana 2500	—	—	—	with Gauge; Holstein Parts
2001	GMC	Savana 3500	—	—	—	with Gauge; Holstein Parts
2001	GMC	Sierra 1500	4.3L	V6	—	with Gauge; Holstein Parts
2001	GMC	Sierra 2500 HD	8.1L	V8	—	with Gauge; Holstein Parts
2001	GMC	Sierra 3500	8.1L	V8	—	with Gauge; Holstein Parts
2001	GMC	Sonoma	—	—	—	with Gauge; Holstein Parts
2001	GMC	Yukon XL 2500	8.1L	V8	—	with Gauge; Holstein Parts
2001	Oldsmobile	Bravada	—	—	—	with Gauge; Holstein Parts
2000	Cadillac	Escalade	—	—	—	with Gauge; Holstein Parts
2000	Chevrolet	Astro	—	—	—	with Gauge; Holstein Parts
2000	Chevrolet	Blazer	—	—	—	with Gauge; Holstein Parts
2000	Chevrolet	C1500	4.3L	V6	—	with Gauge; Holstein Parts
2000	Chevrolet	C2500	7.4L	V8	—	with Gauge; Holstein Parts
2000	Chevrolet	C3500	7.4L	V8	—	with Gauge; Holstein Parts
2000	Chevrolet	C3500HD	7.4L	V8	—	with Gauge; Holstein Parts
2000	Chevrolet	Express 1500	5.7L	V8	—	with Gauge; Holstein Parts
2000	Chevrolet	Express 2500	5.7L	V8	—	with Gauge; Holstein Parts
2000	Chevrolet	Express 3500	7.4L	V8	—	with Gauge; Holstein Parts
2000	Chevrolet	K2500	7.4L	V8	—	with Gauge; Holstein Parts
2000	Chevrolet	K3500	7.4L	V8	—	with Gauge; Holstein Parts
2000	Chevrolet	S10	—	—	—	with Gauge; Holstein Parts
2000	Chevrolet	Silverado 1500	4.3L	V6	—	with Gauge; Holstein Parts
2000	Chevrolet	Sonora	5.7L	V8	—	with Gauge; Holstein Parts
2000	Chevrolet	Tahoe	5.7L	V8	—	with Gauge; Holstein Parts
2000	GMC	C2500	7.4L	V8	—	with Gauge; Holstein Parts
2000	GMC	C3500	7.4L	V8	—	with Gauge; Holstein Parts
2000	GMC	C3500HD	7.4L	V8	—	with Gauge; Holstein Parts
2000	GMC	Jimmy	—	—	—	with Gauge; Holstein Parts
2000	GMC	K2500	7.4L	V8	—	with Gauge; Holstein Parts
2000	GMC	K3500	7.4L	V8	—	with Gauge; Holstein Parts
2000	GMC	Savana 1500	—	—	—	with Gauge; Holstein Parts
2000	GMC	Savana 2500	—	—	—	with Gauge; Holstein Parts
2000	GMC	Savana 3500	—	—	—	with Gauge; Holstein Parts
2000	GMC	Sierra 1500	4.3L	V6	—	with Gauge; Holstein Parts
2000	GMC	Sonoma	—	—	—	with Gauge; Holstein Parts
2000	GMC	Yukon	5.7L	V8	—	with Gauge; Holstein Parts
2000	Isuzu	Hombre	4.3L	V6	—	with Gauge; Holstein Parts
2000	Oldsmobile	Bravada	—	—	—	with Gauge; Holstein Parts
1999	Cadillac	Escalade	—	—	—	with Gauge; Holstein Parts
1999	Chevrolet	Astro	—	—	—	with Gauge; Holstein Parts
1999	Chevrolet	B7	—	—	—	with Gauge; Holstein Parts
1999	Chevrolet	Blazer	—	—	—	with Gauge; Holstein Parts
1999	Chevrolet	C1500	5.7L	V8	—	with Gauge; Holstein Parts
1999	Chevrolet	C1500 Suburban	—	—	—	with Gauge; Holstein Parts
1999	Chevrolet	C2500	7.4L	V8	—	with Gauge; Holstein Parts
1999	Chevrolet	C2500 Suburban	—	—	—	with Gauge; Holstein Parts
1999	Chevrolet	C3500	7.4L	V8	—	with Gauge; Holstein Parts
1999	Chevrolet	C3500HD	7.4L	V8	—	with Gauge; Holstein Parts
1999	Chevrolet	Express 1500	5.7L	V8	—	with Gauge; Holstein Parts
1999	Chevrolet	Express 2500	5.7L	V8	—	with Gauge; Holstein Parts
1999	Chevrolet	Express 3500	7.4L	V8	—	with Gauge; Holstein Parts
1999	Chevrolet	K1500	5.7L	V8	—	with Gauge; Holstein Parts
1999	Chevrolet	K1500 Suburban	—	—	—	with Gauge; Holstein Parts
1999	Chevrolet	K2500	7.4L	V8	—	with Gauge; Holstein Parts
1999	Chevrolet	K2500 Suburban	—	—	—	with Gauge; Holstein Parts
1999	Chevrolet	K3500	7.4L	V8	—	with Gauge; Holstein Parts
1999	Chevrolet	P30	7.4L	V8	—	with Gauge; Holstein Parts
1999	Chevrolet	S10	—	—	—	with Gauge; Holstein Parts
1999	Chevrolet	Silverado 1500	4.3L	V6	—	with Gauge; Holstein Parts
1999	Chevrolet	Suburban 1500	5.7L	V8	—	with Gauge; Holstein Parts
1999	Chevrolet	Tahoe	5.7L	V8	—	with Gauge; Holstein Parts
1999	GMC	C1500	5.7L	V8	—	with Gauge; Holstein Parts
1999	GMC	C1500 Suburban	—	—	—	with Gauge; Holstein Parts
1999	GMC	C2500	7.4L	V8	—	with Gauge; Holstein Parts
1999	GMC	C2500 Suburban	—	—	—	with Gauge; Holstein Parts
1999	GMC	C3500	7.4L	V8	—	with Gauge; Holstein Parts
1999	GMC	C3500HD	7.4L	V8	—	with Gauge; Holstein Parts
1999	GMC	Jimmy	—	—	—	with Gauge; Holstein Parts
1999	GMC	K1500	5.7L	V8	—	with Gauge; Holstein Parts
1999	GMC	K1500 Suburban	—	—	—	with Gauge; Holstein Parts
1999	GMC	K2500	7.4L	V8	—	with Gauge; Holstein Parts
1999	GMC	K2500 Suburban	—	—	—	with Gauge; Holstein Parts
1999	GMC	K3500	7.4L	V8	—	with Gauge; Holstein Parts
1999	GMC	P3500	7.4L	V8	GAS	with Gauge; Holstein Parts
1999	GMC	Savana 1500	5.7L	V8	—	with Gauge; Holstein Parts
1999	GMC	Savana 2500	5.7L	V8	—	with Gauge; Holstein Parts
1999	GMC	Savana 3500	7.4L	V8	—	with Gauge; Holstein Parts
1999	GMC	Sierra 1500	4.3L	V6	—	with Gauge; Holstein Parts
1999	GMC	Sonoma	4.3L	V6	—	with Gauge; Holstein Parts
1999	GMC	Yukon	—	—	—	with Gauge; Holstein Parts
1999	Isuzu	Hombre	4.3L	V6	—	with Gauge; Holstein Parts
1999	Oldsmobile	Bravada	—	—	—	with Gauge; Holstein Parts
1998	Chevrolet	Astro	—	—	—	with Gauge; Holstein Parts
1998	Chevrolet	Blazer	—	—	—	with Gauge; Holstein Parts
1998	Chevrolet	C1500	5.7L	V8	—	with Gauge; Holstein Parts
1998	Chevrolet	C1500 Suburban	—	—	—	with Gauge; Holstein Parts
1998	Chevrolet	C2500	5.7L	V8	—	with Gauge; Holstein Parts
1998	Chevrolet	C2500 Suburban	—	—	—	with Gauge; Holstein Parts
1998	Chevrolet	Express 1500	5.7L	V8	—	with Gauge; Holstein Parts
1998	Chevrolet	Express 2500	5.7L	V8	—	with Gauge; Holstein Parts
1998	Chevrolet	Express 3500	7.4L	V8	—	with Gauge; Holstein Parts
1998	Chevrolet	K1500	5.7L	V8	—	with Gauge; Holstein Parts
1998	Chevrolet	K1500 Suburban	—	—	—	with Gauge; Holstein Parts
1998	Chevrolet	K2500	5.7L	V8	—	with Gauge; Holstein Parts
1998	Chevrolet	K2500 Suburban	—	—	—	with Gauge; Holstein Parts
1998	Chevrolet	K3500	5.7L	V8	—	with Gauge; Holstein Parts
1998	Chevrolet	P30	7.4L	V8	—	with Gauge; Holstein Parts
1998	Chevrolet	S10	—	—	—	with Gauge; Holstein Parts
1998	Chevrolet	Suburban 1500	5.7L	V8	—	with Gauge; Holstein Parts
1998	GMC	C1500	5.7L	V8	—	with Gauge; Holstein Parts
1998	GMC	C2500	5.7L	V8	—	with Gauge; Holstein Parts
1998	GMC	C3500	5.7L	V8	—	with Gauge; Holstein Parts
1998	GMC	Jimmy	—	—	—	with Gauge; Holstein Parts
1998	GMC	K1500	5.7L	V8	—	with Gauge; Holstein Parts
1998	GMC	K2500	5.7L	V8	—	with Gauge; Holstein Parts
1998	GMC	K3500	5.7L	V8	—	with Gauge; Holstein Parts
1998	GMC	P3500	7.4L	V8	GAS	with Gauge; Holstein Parts
1998	GMC	Savana 1500	5.7L	V8	—	with Gauge; Holstein Parts
1998	GMC	Savana 2500	5.7L	V8	—	with Gauge; Holstein Parts
1998	GMC	Savana 3500	7.4L	V8	—	with Gauge; Holstein Parts
1998	GMC	Sonoma	4.3L	V6	—	with Gauge; Holstein Parts
1998	GMC	Yukon	—	—	—	with Gauge; Holstein Parts
1998	Isuzu	Hombre	2.2L	L4	—	with Gauge; Holstein Parts
1998	Oldsmobile	Bravada	—	—	—	with Gauge; Holstein Parts
1997	Chevrolet	Blazer	—	—	—	with Gauge; Holstein Parts
1997	Chevrolet	Express 1500	5.7L	V8	—	with Gauge; Holstein Parts
1997	Chevrolet	Express 2500	5.7L	V8	—	with Gauge; Holstein Parts
1997	Chevrolet	Express 3500	5.7L	V8	—	with Gauge; Holstein Parts
1997	Chevrolet	P30	7.4L	V8	—	with Gauge; Holstein Parts
1997	Chevrolet	S10	—	—	—	with Gauge; Holstein Parts
1997	GMC	Jimmy	—	—	—	with Gauge; Holstein Parts
1997	GMC	P3500	—	—	—	with Gauge; Holstein Parts
1997	Isuzu	Hombre	2.2L	L4	—	with Gauge; Holstein Parts
1997	Oldsmobile	Bravada	—	—	—	with Gauge; Holstein Parts
1996	Chevrolet	Express 1500	5.7L	V8	—	with Gauge; Holstein Parts
1996	Chevrolet	Express 2500	5.7L	V8	—	with Gauge; Holstein Parts
1996	Chevrolet	Express 3500	5.7L	V8	—	with Gauge; Holstein Parts
1996	GMC	G3500	—	—	—	with Gauge; Holstein Parts
1996	GMC	P3500	—	—	—	with Gauge; Holstein Parts
1996	GMC	Savana 1500	—	—	—	with Gauge; Holstein Parts
1996	GMC	Savana 2500	5.7L	V8	—	with Gauge; Holstein Parts
1996	GMC	Savana 3500	—	—	—	with Gauge; Holstein Parts
1987	Buick	Skyhawk	—	—	—	with Gauge; Holstein Parts
No rows match your filter.

Directly replaces or cross-references 13 part numbers

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

Anchor — 81931S663250120812562571D1819AOP6662OPS14OPS88OPS804PS230PS230TS4074SBC1025