Denso 234-4004 Oxygen Sensor - Upstream

Denso OE Style Oxygen Sensor 234-4004

Denso 234-4004 is an OE Style heated oxygen sensor built for specific-fit replacement on a wide range of Chrysler, Dodge, Jeep, and Plymouth applications. It is engineered for upstream locations and uses a threaded mounting design with a 4-wire male connector for direct replacement service.

Key Features

• Heated oxygen sensor for upstream emission control applications
• Specific-fit design for direct replacement on listed vehicles
• 4-wire configuration with male connector
• Threaded mounting type with 0.708 in. thread diameter
• 11.81 in. wiring harness length
• OE Style construction for factory-style fit and function

OE Style Design

Denso’s OE Style line is built to match original equipment fitment and installation requirements. The sensor is precision built for first-time fit and tested to OE standards, helping maintain accurate exhaust feedback for engine management systems. Denso also uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting long service life in demanding exhaust environments. This part cross-references Bosch 13275 and NTK 23023 for the same application. Denso 234-4004 is a direct replacement choice for drivers servicing Chrysler Concorde, Dodge Ram 2500, and Jeep Cherokee upstream oxygen sensor applications.

Vehicle Fitment

• Fits 1995-1996 Chrysler Cirrus, Upstream
• Fits 1996 Chrysler Sebring, Upstream
• Fits 1989-1996 Dodge Dakota, Upstream
• Fits 1995-1996 Dodge Neon, Upstream
• Fits 1995-1996 Dodge Stratus, Upstream
• Fits 1991-1996 Jeep Cherokee, Upstream
• Fits 1996 Plymouth Breeze, Upstream
• Fits 1995-1996 Plymouth Neon, Upstream
• Fits 1994-1995 Chrysler Concorde, Upstream, Square Connector; OE Style
• Fits 1993-1995 Chrysler Concorde, Upstream, OE Style
• Fits 1994-1995 Chrysler Intrepid, Upstream, Square Connector; OE Style
• Fits 1993-1995 Chrysler Intrepid, Upstream, OE Style
• Fits 1989-1995 Chrysler LeBaron, Upstream, OE Style
• Fits 1994-1995 Chrysler LHS, Upstream, Square Connector; OE Style
• Fits 1994-1995 Chrysler New Yorker, Upstream, Square Connector; OE Style
• Fits 1989-1995 Dodge Caravan, Upstream, OE Style
• Fits 1994-1995 Dodge Intrepid, Upstream, Square Connector; OE Style
• Fits 1993-1995 Dodge Intrepid, Upstream, OE Style
• Fits 1995 Dodge Ram 1500, Upstream, Square Connector; OE Style
• Fits 1994-1995 Dodge Ram 2500, Upstream, OE Style
• Fits 1995 Dodge Ram 2500, Upstream, Square Connector; OE Style
• Fits 1994-1995 Dodge Ram 3500, Upstream, OE Style
• Fits 1995 Dodge Ram 3500, Upstream, Square Connector; OE Style
• Fits 1989-1995 Dodge Spirit, Upstream, OE Style
• Fits 1991-1995 Jeep Wrangler, Upstream, OE Style
• Fits 1989-1995 Plymouth Acclaim, Upstream, OE Style
• Fits 1989-1995 Plymouth Voyager, Upstream, OE Style
• Fits 1990-1994 Chrysler Town & Country, Upstream, OE Style
• Fits 1989-1994 Dodge Grand Caravan, Upstream, OE Style
• Fits 1994 Dodge Ram 1500, Upstream, w/ 12" Sensor; OE Style
• Fits 1994 Dodge Ram 2500, Upstream, w/ 12" Sensor; OE Style
• Fits 1989-1994 Dodge Shadow, Upstream, OE Style
• Fits 1989-1994 Plymouth Grand Voyager, Upstream, OE Style
• Fits 1989-1994 Plymouth Sundance, Upstream, OE Style
• Fits 1989-1993 Chrysler Daytona, Upstream, OE Style
• Fits 1988-1993 Chrysler Dynasty, Upstream, OE Style
• Fits 1990-1993 Chrysler Imperial, Upstream, OE Style
• Fits 1989-1993 Chrysler New Yorker, Upstream, OE Style
• Fits 1988-1993 Dodge B250, Upstream, OE Style
• Fits 1988-1993 Dodge B350, Upstream, OE Style
• Fits 1993 Dodge D150, Upstream, OE Style
• Fits 1988-1991 Dodge D150, Upstream, OE Style
• Fits 1988-1993 Dodge D250, Upstream, OE Style
• Fits 1988-1993 Dodge D350, Upstream, OE Style
• Fits 1989-1993 Dodge Daytona, Upstream, OE Style
• Fits 1988-1993 Dodge Ramcharger, Upstream, OE Style
• Fits 1993 Dodge W150, Upstream, OE Style
• Fits 1988-1991 Dodge W150, Upstream, OE Style
• Fits 1988-1993 Dodge W250, Upstream, OE Style
• Fits 1988-1993 Dodge W350, Upstream, OE Style
• Fits 1991-1992 Jeep Comanche, Upstream, OE Style
• Fits 1991 Dodge B150, Upstream, OE Style
• Fits 1989 Dodge B150, Upstream, OE Style
• Fits 1989 Dodge Aries, Upstream, OE Style
• Fits 1988-1989 Dodge D100, Upstream, OE Style
• Fits 1989 Dodge Lancer, Upstream, OE Style
• Fits 1988-1989 Dodge W100, Upstream, OE Style
• Fits 1989 Plymouth Expo, Upstream, OE Style
• Fits 1989 Plymouth Reliant, Upstream, OE Style

Common Replacement Uses

• Restores proper upstream exhaust oxygen sensing on listed Chrysler, Dodge, Jeep, and Plymouth vehicles
• Addresses drivability issues tied to aging or contaminated oxygen sensors
• Supports fuel control corrections when the original sensor response has slowed
• Helps resolve check engine light conditions related to oxygen sensor performance
• Replaces worn OE-style sensors on vehicles such as Dodge Dakota, Jeep Cherokee, and Chrysler Concorde

Installation Notes

Verify the upstream sensor location, connector style, and thread size before installation. This Denso oxygen sensor uses a threaded mount and a specific-fit harness, so matching the original routing and connector orientation is important for proper installation. Confirm the vehicle’s year, make, model, and connector configuration before ordering Denso 234-4004.

Quality Assurance

Denso manufactures and tests this OE Style oxygen sensor to strict original-equipment standards. The precision-built design is intended to deliver accurate replacement fitment and consistent sensor performance across the listed applications.