Dorman 34174 A/C Compressor Bypass Pulley

Name: Dorman 34174 A/C Compressor Bypass Pulley
Brand: Dorman
SKU: BCZF-34174
Price: 77.35 USD
Availability: InStock

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254 vehicles fit this part

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OE Direct Replacement — Bolt-on fit, no modifications needed

Fitment: Chevrolet, GMC, Workhorse, Cadillac, Isuzu, and Oldsmobile, Astro, Safari, FasTrack FT1061, FasTrack FT1261, FasTrack FT1460, FasTrack FT1461, FasTrack FT1601, FasTrack FT1801, FasTrack FT1802, FasTrack FT931, P30, FasTrack FT1260, FasTrack FT1600, FasTrack FT1800, Escalade, C2500, C3500, K2500, K3500, Tahoe, Yukon, C1500, C1500 Suburban, C2500 Suburban, K1500, K1500 Suburban, K2500 Suburban, P3500, Blazer, S10, Jimmy, Sonoma, Hombre, and Bravada

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Overview of Dorman A/C Compressor Bypass Pulley 34174

The Dorman A/C Compressor Bypass Pulley 34174 is designed to provide reliable operation for your vehicle's HVAC system. Engineered with a durable aluminum bracket and a plastic pulley, this part ensures smooth serpentine belt function in select GM and Isuzu models.

Constructed with an aluminum mounting bracket for strength and corrosion resistance
Plastic pulley with a 120mm outside diameter for optimal belt engagement
Includes mounting hardware and bracket for straightforward installation
Compatible with serpentine belt systems
Installation instructions included for ease of use
Designed for Ltr4 compressor types
Package contains one pulley and bracket assembly

Detailed Product Description

The Dorman 34174 A/C Compressor Bypass Pulley is specifically engineered to replace worn or damaged pulleys in HVAC systems of various vehicles including Cadillac Escalade, Chevrolet Blazer, GMC Sierra models, Isuzu Hombre, and Oldsmobile Bravada. The aluminum bracket provides a sturdy mounting base, while the plastic pulley is designed to reduce noise and wear on the serpentine belt. With a 120mm outside diameter, this pulley maintains proper belt alignment and tension, ensuring efficient operation of the compressor bypass function.

Compatible Vehicles and Applications

This A/C compressor bypass pulley is compatible with a range of vehicles equipped with Ltr4 compressors and serpentine belt systems. Compatible makes and models include:

Cadillac Escalade
Chevrolet Astro, Blazer, C1500, C1500 Suburban, C2500, C2500 Suburban, C3500, S10, Tahoe, Sonoma
GMC Jimmy, K1500, K1500 Suburban, K2500, K2500 Suburban, K3500, P30, P3500, Safari, Yukon
Isuzu Hombre
Oldsmobile Bravada

Common Issues Addressed by This Part

Worn or damaged A/C compressor bypass pulley causing belt slippage
Noise or squealing from a failing pulley
Misalignment of serpentine belt leading to premature belt wear
Failure of the mounting bracket affecting pulley stability
Reduced HVAC system efficiency due to pulley malfunction

Installation Notes and Tips

The Dorman 34174 includes all necessary mounting hardware and a bracket to facilitate installation. Installation instructions are provided to guide through the replacement process. It is recommended to inspect the serpentine belt for wear during installation and replace if necessary to ensure optimal performance. Proper torque specifications should be followed to secure the bracket and pulley assembly.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards. The 34174 A/C Compressor Bypass Pulley undergoes rigorous quality control to ensure durability and fitment accuracy. This part comes with a limited warranty covering defects in material and workmanship, providing confidence in its long-term reliability.

Brand	Dorman
Part Number	34174
Belt Type	Serpentine
Compressor Type	Ltr4
Installation Instructions Included	Yes
Material	Aluminum Bracket
Material	Plastic Pulley
Mounting Bracket Included	Yes
Mounting Hardware Included	Yes
Number of Pulleys Included	1
Outside Diameter	120
Package Contents	Pulley and Bracket

This part fits 254 vehicles. Search below:

Year	Make	Model	Liters	Cylinders	Position	Notes
2003	Chevrolet	Astro			N/A
2003	GMC	Safari			N/A
2002	Chevrolet	Astro			N/A
2002	GMC	Safari			N/A
2001	Chevrolet	Astro			N/A
2001	GMC	Safari			N/A
2000	Cadillac	Escalade			N/A
2000	Chevrolet	Astro			N/A
2000	Chevrolet	C2500	7.4L	V8	N/A
2000	Chevrolet	C2500	5.7L	V8	N/A
2000	Chevrolet	C3500	7.4L	V8	N/A
2000	Chevrolet	C3500	5.7L	V8	N/A
2000	Chevrolet	K2500	7.4L	V8	N/A
2000	Chevrolet	K2500	5.7L	V8	N/A
2000	Chevrolet	K3500	7.4L	V8	N/A
2000	Chevrolet	K3500	5.7L	V8	N/A
2000	Chevrolet	Tahoe	5.7L	V8	N/A
2000	GMC	C2500	7.4L	V8	N/A
2000	GMC	C2500	5.7L	V8	N/A
2000	GMC	C3500	7.4L	V8	N/A
2000	GMC	C3500	5.7L	V8	N/A
2000	GMC	K2500	7.4L	V8	N/A
2000	GMC	K2500	5.7L	V8	N/A
2000	GMC	K3500	7.4L	V8	N/A
2000	GMC	K3500	5.7L	V8	N/A
2000	GMC	Safari			N/A
2000	GMC	Yukon	5.7L	V8	N/A
1999	Cadillac	Escalade			N/A
1999	Chevrolet	Astro			N/A
1999	Chevrolet	C1500	5.7L	V8	N/A
1999	Chevrolet	C1500	5.0L	V8	N/A
1999	Chevrolet	C1500 Suburban	5.7L	V8	N/A
1999	Chevrolet	C2500	7.4L	V8	N/A
1999	Chevrolet	C2500	5.7L	V8	N/A
1999	Chevrolet	C2500 Suburban	7.4L	V8	N/A
1999	Chevrolet	C2500 Suburban	5.7L	V8	N/A
1999	Chevrolet	C3500	7.4L	V8	N/A
1999	Chevrolet	C3500	5.7L	V8	N/A
1999	Chevrolet	K1500			N/A
1999	Chevrolet	K1500 Suburban	5.7L	V8	N/A
1999	Chevrolet	K2500	7.4L	V8	N/A
1999	Chevrolet	K2500	5.7L	V8	N/A
1999	Chevrolet	K2500 Suburban	7.4L	V8	N/A
1999	Chevrolet	K2500 Suburban	5.7L	V8	N/A
1999	Chevrolet	K3500	7.4L	V8	N/A
1999	Chevrolet	K3500	5.7L	V8	N/A
1999	Chevrolet	P30	4.3L	V6	N/A
1999	Chevrolet	P30	7.4L	V8	N/A
1999	Chevrolet	P30			N/A	L6 250CID 4.1L (4098cc)
1999	Chevrolet	P30	5.7L	V8	N/A
1999	Chevrolet	Tahoe	5.7L	V8	N/A
1999	GMC	C1500	5.7L	V8	N/A
1999	GMC	C1500	5.0L	V8	N/A
1999	GMC	C1500 Suburban	5.7L	V8	N/A
1999	GMC	C2500	7.4L	V8	N/A
1999	GMC	C2500	5.7L	V8	N/A
1999	GMC	C2500 Suburban	7.4L	V8	N/A
1999	GMC	C2500 Suburban	5.7L	V8	N/A
1999	GMC	C3500	7.4L	V8	N/A
1999	GMC	C3500	5.7L	V8	N/A
1999	GMC	K1500			N/A
1999	GMC	K1500 Suburban	5.7L	V8	N/A
1999	GMC	K2500	7.4L	V8	N/A
1999	GMC	K2500	5.7L	V8	N/A
1999	GMC	K2500 Suburban	7.4L	V8	N/A
1999	GMC	K2500 Suburban	5.7L	V8	N/A
1999	GMC	K3500	7.4L	V8	N/A
1999	GMC	K3500	5.7L	V8	N/A
1999	GMC	P3500	4.3L	V6	N/A
1999	GMC	P3500	7.4L	V8	N/A
1999	GMC	P3500	5.7L	V8	N/A
1999	GMC	Safari			N/A
1999	GMC	Yukon			N/A
1998	Chevrolet	Astro			N/A
1998	Chevrolet	Blazer			N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.
1998	Chevrolet	C1500			N/A	L6 251CID 4.1L
1998	Chevrolet	C1500	4.3L	V6	N/A
1998	Chevrolet	C1500	5.7L	V8	N/A
1998	Chevrolet	C1500	5.0L	V8	N/A
1998	Chevrolet	C1500 Suburban	5.7L	V8	N/A
1998	Chevrolet	C2500	7.4L	V8	N/A
1998	Chevrolet	C2500	5.7L	V8	N/A
1998	Chevrolet	C2500	5.0L	V8	N/A
1998	Chevrolet	C2500 Suburban	7.4L	V8	N/A
1998	Chevrolet	C2500 Suburban	5.7L	V8	N/A
1998	Chevrolet	C3500	7.4L	V8	N/A
1998	Chevrolet	C3500	5.7L	V8	N/A
1998	Chevrolet	K1500	4.3L	V6	N/A
1998	Chevrolet	K1500	5.7L	V8	N/A
1998	Chevrolet	K1500	5.0L	V8	N/A
1998	Chevrolet	K1500 Suburban	5.7L	V8	N/A
1998	Chevrolet	K2500	7.4L	V8	N/A
1998	Chevrolet	K2500	5.7L	V8	N/A
1998	Chevrolet	K2500	5.0L	V8	N/A
1998	Chevrolet	K2500 Suburban	7.4L	V8	N/A
1998	Chevrolet	K2500 Suburban	5.7L	V8	N/A
1998	Chevrolet	K3500	7.4L	V8	N/A
1998	Chevrolet	K3500	5.7L	V8	N/A
1998	Chevrolet	P30	4.3L	V6	N/A
1998	Chevrolet	P30	7.4L	V8	N/A
1998	Chevrolet	P30	5.7L	V8	N/A
1998	Chevrolet	S10	4.3L	V6	N/A	w/Original Compressor No. 1136519; Some Modification of Power Steering Fill Tube Bracket May Be Required.
1998	Chevrolet	Tahoe	5.7L	V8	N/A
1998	GMC	C1500	4.3L	V6	N/A
1998	GMC	C1500	5.7L	V8	N/A
1998	GMC	C1500	5.0L	V8	N/A
1998	GMC	C1500 Suburban	5.7L	V8	N/A
1998	GMC	C2500	7.4L	V8	N/A
1998	GMC	C2500	5.7L	V8	N/A
1998	GMC	C2500	5.0L	V8	N/A
1998	GMC	C2500 Suburban	7.4L	V8	N/A
1998	GMC	C2500 Suburban	5.7L	V8	N/A
1998	GMC	C3500	7.4L	V8	N/A
1998	GMC	C3500	5.7L	V8	N/A
1998	GMC	Jimmy			N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.
1998	GMC	K1500	4.3L	V6	N/A
1998	GMC	K1500	5.7L	V8	N/A
1998	GMC	K1500	5.0L	V8	N/A
1998	GMC	K1500 Suburban	5.7L	V8	N/A
1998	GMC	K2500	7.4L	V8	N/A
1998	GMC	K2500	5.7L	V8	N/A
1998	GMC	K2500	5.0L	V8	N/A
1998	GMC	K2500 Suburban	7.4L	V8	N/A
1998	GMC	K2500 Suburban	5.7L	V8	N/A
1998	GMC	K3500	7.4L	V8	N/A
1998	GMC	K3500	5.7L	V8	N/A
1998	GMC	P3500	4.3L	V6	N/A
1998	GMC	P3500	7.4L	V8	N/A
1998	GMC	P3500	5.7L	V8	N/A
1998	GMC	Safari			N/A
1998	GMC	Sonoma	4.3L	V6	N/A	w/Original Compressor No. 1136519; Some Modification of Power Steering Fill Tube Bracket May Be Required.
1998	GMC	Yukon			N/A
1998	Isuzu	Hombre	4.3L	V6	N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.
1998	Oldsmobile	Bravada			N/A	w/Original Compressor No. 1136519; Some Modification of Power Steering Fill Tube Bracket May Be Required.
1997	Chevrolet	Astro			N/A
1997	Chevrolet	Blazer			N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.
1997	Chevrolet	C1500			N/A	L6 251CID 4.1L
1997	Chevrolet	C1500	4.3L	V6	N/A
1997	Chevrolet	C1500	5.7L	V8	N/A
1997	Chevrolet	C1500	5.0L	V8	N/A
1997	Chevrolet	C1500 Suburban	5.7L	V8	N/A
1997	Chevrolet	C2500	7.4L	V8	N/A
1997	Chevrolet	C2500	5.7L	V8	N/A
1997	Chevrolet	C2500	5.0L	V8	N/A
1997	Chevrolet	C2500 Suburban	7.4L	V8	N/A
1997	Chevrolet	C2500 Suburban	5.7L	V8	N/A
1997	Chevrolet	C3500	7.4L	V8	N/A
1997	Chevrolet	C3500	5.7L	V8	N/A
1997	Chevrolet	K1500	4.3L	V6	N/A
1997	Chevrolet	K1500	5.7L	V8	N/A
1997	Chevrolet	K1500	5.0L	V8	N/A
1997	Chevrolet	K1500 Suburban	5.7L	V8	N/A
1997	Chevrolet	K2500	7.4L	V8	N/A
1997	Chevrolet	K2500	5.7L	V8	N/A
1997	Chevrolet	K2500	5.0L	V8	N/A
1997	Chevrolet	K2500 Suburban	7.4L	V8	N/A
1997	Chevrolet	K2500 Suburban	5.7L	V8	N/A
1997	Chevrolet	K3500	7.4L	V8	N/A
1997	Chevrolet	K3500	5.7L	V8	N/A
1997	Chevrolet	P30	4.3L	V6	N/A
1997	Chevrolet	P30	7.4L	V8	N/A
1997	Chevrolet	P30	5.7L	V8	N/A
1997	Chevrolet	S10	4.3L	V6	N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.
1997	Chevrolet	Tahoe	5.7L	V8	N/A
1997	GMC	C1500	4.3L	V6	N/A
1997	GMC	C1500			N/A	L6 250CID 4.1L (4097cc)
1997	GMC	C1500	5.7L	V8	N/A
1997	GMC	C1500	5.0L	V8	N/A
1997	GMC	C1500 Suburban	5.7L	V8	N/A
1997	GMC	C2500	7.4L	V8	N/A
1997	GMC	C2500	5.7L	V8	N/A
1997	GMC	C2500	5.0L	V8	N/A
1997	GMC	C2500 Suburban	7.4L	V8	N/A
1997	GMC	C2500 Suburban	5.7L	V8	N/A
1997	GMC	C3500	7.4L	V8	N/A
1997	GMC	C3500	5.7L	V8	N/A
1997	GMC	Jimmy			N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.
1997	GMC	K1500	4.3L	V6	N/A
1997	GMC	K1500	5.7L	V8	N/A
1997	GMC	K1500	5.0L	V8	N/A
1997	GMC	K1500 Suburban	5.7L	V8	N/A
1997	GMC	K2500	7.4L	V8	N/A
1997	GMC	K2500	5.7L	V8	N/A
1997	GMC	K2500 Suburban	7.4L	V8	N/A
1997	GMC	K2500 Suburban	5.7L	V8	N/A
1997	GMC	K3500	7.4L	V8	N/A
1997	GMC	K3500	5.7L	V8	N/A
1997	GMC	P3500	4.3L	V6	N/A
1997	GMC	P3500	7.4L	V8	N/A
1997	GMC	P3500	5.7L	V8	N/A
1997	GMC	Safari			N/A
1997	GMC	Sonoma	4.3L	V6	N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.
1997	GMC	Yukon	5.7L	V8	N/A
1997	Isuzu	Hombre	4.3L	V6	N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.
1997	Oldsmobile	Bravada			N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.
1996	Chevrolet	Astro			N/A
1996	Chevrolet	Blazer			N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.
1996	Chevrolet	C1500			N/A	L6 251CID 4.1L
1996	Chevrolet	C1500	4.3L	V6	N/A
1996	Chevrolet	C1500	5.7L	V8	N/A
1996	Chevrolet	C1500	5.0L	V8	N/A
1996	Chevrolet	C1500 Suburban	5.7L	V8	N/A
1996	Chevrolet	C2500	7.4L	V8	N/A
1996	Chevrolet	C2500	5.7L	V8	N/A
1996	Chevrolet	C2500	5.0L	V8	N/A
1996	Chevrolet	C2500 Suburban	7.4L	V8	N/A
1996	Chevrolet	C2500 Suburban	5.7L	V8	N/A
1996	Chevrolet	C3500	7.4L	V8	N/A
1996	Chevrolet	C3500	5.7L	V8	N/A
1996	Chevrolet	K1500	4.3L	V6	N/A
1996	Chevrolet	K1500	5.7L	V8	N/A
1996	Chevrolet	K1500	5.0L	V8	N/A
1996	Chevrolet	K1500 Suburban	5.7L	V8	N/A
1996	Chevrolet	K2500	7.4L	V8	N/A
1996	Chevrolet	K2500	5.7L	V8	N/A
1996	Chevrolet	K2500 Suburban	7.4L	V8	N/A
1996	Chevrolet	K2500 Suburban	5.7L	V8	N/A
1996	Chevrolet	K3500	7.4L	V8	N/A
1996	Chevrolet	K3500	5.7L	V8	N/A
1996	Chevrolet	P30	4.3L	V6	N/A
1996	Chevrolet	P30	7.4L	V8	N/A
1996	Chevrolet	P30	5.7L	V8	N/A
1996	Chevrolet	S10	4.3L	V6	N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.
1996	Chevrolet	Tahoe	5.7L	V8	N/A
1996	GMC	C1500	4.3L	V6	N/A
1996	GMC	C1500			N/A	L6 250CID 4.1L (4097cc)
1996	GMC	C1500	5.7L	V8	N/A
1996	GMC	C1500	5.0L	V8	N/A
1996	GMC	C1500 Suburban	5.7L	V8	N/A
1996	GMC	C2500	7.4L	V8	N/A
1996	GMC	C2500	5.7L	V8	N/A
1996	GMC	C2500	5.0L	V8	N/A
1996	GMC	C2500 Suburban	7.4L	V8	N/A
1996	GMC	C2500 Suburban	5.7L	V8	N/A
1996	GMC	C3500	7.4L	V8	N/A
1996	GMC	C3500	5.7L	V8	N/A
1996	GMC	Jimmy			N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.
1996	GMC	K1500	4.3L	V6	N/A
1996	GMC	K1500	5.7L	V8	N/A
1996	GMC	K1500	5.0L	V8	N/A
1996	GMC	K1500 Suburban	5.7L	V8	N/A
1996	GMC	K2500	7.4L	V8	N/A
1996	GMC	K2500	5.7L	V8	N/A
1996	GMC	K2500 Suburban	7.4L	V8	N/A
1996	GMC	K2500 Suburban	5.7L	V8	N/A
1996	GMC	K3500	7.4L	V8	N/A
1996	GMC	K3500	5.7L	V8	N/A
1996	GMC	P3500	4.3L	V6	N/A
1996	GMC	P3500	7.4L	V8	N/A
1996	GMC	P3500	5.7L	V8	N/A
1996	GMC	Safari			N/A
1996	GMC	Sonoma	4.3L	V6	N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.
1996	GMC	Yukon	5.7L	V8	N/A
1996	Oldsmobile	Bravada			N/A	Some Modification of Power Steering Fill Tube Bracket May Be Required.

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

This part directly replaces or is cross-referenced with the following part numbers:

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