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Continental 4PK939ELAST Serpentine Belt - Air Conditioning
| Brand | Continental 4PK939ELAST |
|---|---|
| Position | Air Conditioning |
| Belt Groove Quantity | 4 |
| Belt Top Width | 0.53 |
| Belt Length | 36.97 |
| Product line | Metric Stretch Belt |
| Fits | Chevrolet, GMC, and Hummer · 34 vehicles |
Stretch belt design. Simplifies installation and helps maintain proper tension.
EPDM construction. Uses a polyamide tensile cord for reliable operation.
Metric fitment. Part number includes rib count, length, and ELAST suffix.
Cross-references 4451A083 and 12626222 for the same application. See all 2.
Continental Metric Stretch Belt for A/C Drive
The Continental Metric Stretch Belt is a serpentine-style accessory drive belt built for air conditioning applications that require a stretch-fit design. Part number 4PK939ELAST uses EPDM rubber compounds and a polyamide tensile cord to install without a tensioner adjustment and then recover tension in service.
For GM truck and van applications, this belt supports a clean OE-style replacement path for the air conditioning drive on select GMC Savana, Sierra, Chevrolet Silverado, and Hummer models. The 4PK939ELAST designation identifies the rib count and length, with the ELAST suffix indicating a stretch belt.
Key Features
- 4-rib stretch belt design for accessory drive use
- 0.53 in. top width and 36.97 in. length
- EPDM compound for durability in underhood conditions
- Polyamide tensile cord helps the belt recover tension after installation
- Functional part number format helps identify the correct stretch belt application
- Continental Metric Stretch Belt line for OE-style service replacement
Fitment and Application Details
Compatible with air conditioning drive applications on select GM vehicles, including Fits 2017 GMC Savana 2500, Air Conditioning; Fits 2009 GMC Savana 2500, Air Conditioning; Fits 2017 GMC Savana 3500, Air Conditioning; Fits 2009 GMC Savana 3500, Air Conditioning; Fits 2010-2015 GMC Savana 2500, Air Conditioning; Fits 2010-2015 GMC Savana 3500, Air Conditioning; Fits 2011-2014 GMC Savana 1500, Air Conditioning; Fits 2012 GMC Sierra, Air Conditioning; Fits 2012 GMC Sierra 1500, Air Conditioning; Fits 2010 GMC Sierra 1500, Air Conditioning; Fits 2012 GMC Sierra 2500 HD, Air Conditioning; Fits 2012 GMC Sierra 3500 HD, Air Conditioning; Fits 2011 Chevrolet Silverado 1500, Air Conditioning; Fits 2009-2010 GMC Savana 1500, Air Conditioning; Fits 2008-2010 Hummer H3, Air Conditioning; Fits 2009-2010 Hummer H3T, Air Conditioning; Fits 2009 Hummer H2, Air Conditioning.
This part cross-references GM OE numbers 4451A083 and 12626222 for the same application.
What This Belt Helps Address
- Cracked or worn air conditioning drive belt material
- Noise from a belt that has lost proper tension
- Incorrect belt length or rib count during A/C belt replacement
- Installation issues on stretch-belt-equipped GM accessory drives
- Service replacement needs on GMC Savana, Sierra, Chevrolet Silverado, and Hummer A/C systems
Installation Notes and Tips
Stretch belts are installed without a conventional tensioner adjustment, so correct routing and belt size are critical. Verify the 4-rib profile, 0.53-inch top width, and 36.97-inch length before installation, and confirm the ELAST suffix on the part number when replacing a removed stretch belt. On vehicles listed with stretch-belt notes, replace the belt after removal to maintain proper fit and operation.
Quality Assurance
Continental uses advanced OEM-focused belt technology for this Metric Stretch Belt line, with EPDM construction and a tensile cord engineered to maintain tension after installation. Part number 4PK939ELAST is identified specifically as a stretch belt for accurate service selection.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2017 | GMC | Savana 2500 | 4.8L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2017 | GMC | Savana 3500 | 4.8L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2015 | GMC | Savana 2500 | 4.8L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2015 | GMC | Savana 3500 | 4.8L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2014 | GMC | Savana 1500 | 5.3L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2014 | GMC | Savana 2500 | 4.8L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2014 | GMC | Savana 3500 | 4.8L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2013 | GMC | Savana 1500 | 5.3L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2013 | GMC | Savana 2500 | 4.8L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2013 | GMC | Savana 3500 | 4.8L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2012 | GMC | Savana 1500 | 5.3L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2012 | GMC | Savana 2500 | 4.8L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2012 | GMC | Savana 3500 | 4.8L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2012 | GMC | Sierra | 5.3L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2012 | GMC | Sierra 1500 | 4.8L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2012 | GMC | Sierra 2500 HD | 6.0L | V8 | FLEX | Air Conditioning | Metric Stretch Belt |
| 2012 | GMC | Sierra 3500 HD | 6.0L | V8 | FLEX | Air Conditioning | Metric Stretch Belt |
| 2011 | Chevrolet | Silverado 1500 | 4.8L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2011 | GMC | Savana 1500 | 5.3L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2011 | GMC | Savana 2500 | 4.8L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2011 | GMC | Savana 3500 | 4.8L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2010 | GMC | Savana 1500 | 5.3L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2010 | GMC | Savana 2500 | 4.8L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2010 | GMC | Savana 3500 | 4.8L | V8 | — | Air Conditioning | Stretch Belt (If a stretch belt is removed for any reason, it must be replaced).; Metric Stretch Belt |
| 2010 | GMC | Sierra 1500 | 4.8L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2010 | Hummer | H3 | 5.3L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2010 | Hummer | H3T | 5.3L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2009 | GMC | Savana 1500 | 5.3L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2009 | GMC | Savana 2500 | 4.8L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2009 | GMC | Savana 3500 | 4.8L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2009 | Hummer | H2 | 6.2L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2009 | Hummer | H3 | 5.3L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2009 | Hummer | H3T | 5.3L | V8 | — | Air Conditioning | Metric Stretch Belt |
| 2008 | Hummer | H3 | 5.3L | V8 | — | Air Conditioning | Metric Stretch Belt |
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