
12687464 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $13.48 | Condition is Used, Genuine GM Exhaust Gas Recirculation Pipe Shield 12687464 L5P OEM, shipping cost = $11.95 | 100.0% |
![]() | $13.48 | Top Pick! Condition is Used, Silverado GM Exhaust Gas Recirculation Pipe Shield 12687464 L5P OEM, shipping cost = $11.95 | 100.0% |
![]() | $15.00 | Condition is Used, 17-21 Gm OEM Exhaust Gas Recirculation Pipe Shield 12687464 Duramax L5p, shipping cost = $14.08 | 100.0% |
![]() | $31.88 | Condition is Used, 18 SIERRA 2500 Silverado Gm Exhaust Gas Recirculation Pipe Shield 12687464 L5p, FREE SHIPPING | 99.6% |
![]() | $70.00 | Condition is Used, Genuine GM Exhaust Gas Recirculation Heat Pipe Shields ALL L5P USED, FREE SHIPPING | 99.7% |
![]() | $59.99 | Top Pick! Condition is Used, 2019 Genuine GM Exhaust Gas Recirculation Heat Pipe Shields ALL L5P USED Duramax, shipping cost = $18.00 | 99.8% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $19.99 | Condition is New other (see details), Genuine GM Exhaust Gas Recirculation Pipe Shield 12687464 L5P OEM GM Takeoff, shipping cost = $9.52 | 100.0% |
![]() | $59.99 | Condition is New other (see details), 2022 6.6L Duramax Engine Coolant Bypass Tube GM Takeoff Part With 7 Miles, shipping cost = $12.55 | 100.0% |

The 12687464 2022 6.6L Duramax engine coolant bypass tube is a crucial automotive component designed specifically for GM vehicles equipped with the 6.6L Duramax engine. This cooling system part ensures the efficient flow of engine coolant, maintaining optimal operating temperatures for the engine.
Manufactured with precision, this coolant bypass tube is made of high-quality materials, resistant to corrosion, and durable enough to withstand the rigors of prolonged use. Its unique design enables the engine to maintain an ideal coolant temperature range, protecting the engine from overheating and potential damage.
The bypass tube is designed to connect specific coolant passages in the engine, allowing excess coolant to bypass particular cooling components when necessary. This controlled circulation of coolant ensures the engine is operating at optimal temperatures, while also providing an additional layer of cooling protection during heavy-duty applications or under extreme weather conditions.
This cooling system component comes thoroughly tested for optimal performance and is ready for easy installation in GM 2022 6.6L Duramax engines. It's essential to note that, like all automotive parts, periodic inspections and timely replacement are crucial for maintaining the longevity and efficiency of the entire cooling system.
Investing in a high-quality coolant bypass tube like the 12687464 GM part will give you peace of mind as a vehicle owner, knowing that this essential cooling system component is doing its job effectively and efficiently, keeping the engine operating at its best.
Pros and Cons of Buying a 6.6L Duramax Engine Coolant Bypass Tube Replacement
Buying a coolant bypass tube replacement for a 6.6L Duramax engine can be an essential maintenance task for GM vehicle owners. This component is prone to failure, and it's primarily considered for preventing coolant contamination caused by the post-injection system. Here's a review of potential advantages and disadvantages of purchasing a coolant bypass tube for this engine.
Pros:1. Improved Engine Reliability: By replacing a worn or damaged coolant bypass tube, you can ensure that coolant contamination is minimized, helping maintain optimal engine performance and longevity.
2. Prevents Engine Damage: A defective coolant bypass tube may allow coolant to enter the engine oil system, leading to potential engine damage, such as score marks on piston crowns or even complete engine failure.
3. Better Cooling System Efficiency: A functional coolant bypass tube ensures that the engine coolant is appropriately directed and recycled between the engine and the cooling system, enhancing the cooling efficiency and reducing excess heat build-up.
4. Maintains Warranty Coverage: If you own a relatively new GM vehicle, replacing the coolant bypass tube as needed can help ensure you maintain your warranty coverage for potential engine failure issues.
Cons:1. Cost: Replacing a coolant bypass tube can be a relatively expensive maintenance task, with aftermarket prices ranging from $150 to $350, depending on the brand and quality of the replacement part.
2. Complex Process: The procedure of replacing the coolant bypass tube may not be a simple job for novice DIYers, given its location in the engine and the need to remove other components such as the power steering pump to access it. A professional mechanic's assistance may be necessary for a hassle-free replacement.
3. Potential for Coolant Leaks: If the new coolant bypass tube is not installed correctly, leaks can occur, leading to coolant loss and potential engine damage. Proper installation and sealing is crucial.
4. Limited Performance Improvement: Although replacing a coolant bypass tube can enhance the engine cooling system's efficiency, it may not directly result in an overall power boost or significant performance enhancement.
Conclusion:Considering the pros and cons above, deciding to buy a coolant bypass tube for a 6.6L Duramax engine depends on your priorities and circumstances. If you want to ensure your engine remains reliable, prevent potential damage, and maintain your warranty coverage, purchasing a replacement might be the best decision. Just be aware of the associated costs, complex installation process, and the fact that it may not provide drastic performance improvements. Ultimately, proactive maintenance can save you from future repair costs and potentially more significant engine damage.
Recommendation:For GM vehicle owners with a 6.6L Duramax engine, it's recommended to follow the manufacturer's recommended service interval for the coolant bypass tube replacement. Regular maintenance and timely replacement will minimize potential coolant contamination, engine damage, and future repair costs. If you are not confident in performing the replacement yourself, consider seeking the assistance of a professional mechanic to ensure proper installation and peace of mind.
Details:
This is a Gm takeoff part with only 7 miles on it. 2022 6.6l duramax engine coolant bypass tube.
specifications heatnshield:
- for makes: Gm
- brand: General Motors
- mpn: 12687464
- part type: Engine Tube Motor
- year: 2020 2021 2022
- fitment type: Direct Replacement
- genuine oem: Yes
- make: Chevrolet
- placement on vehicle: Engine Compartment
payments heatnshield:
- credit card: mastercard
- other
- wallet: apple-pay
general heatnshield:
- category: Auto Parts > Car Truck Accessories > Exhaust Emission Systems > Heat Shields, Wraps Sleeves
seller heatnshield:
- # reviews: 1749
- city: roaring spring, pennsylvania
- rating: 100.0%
returns heatnshield:
- policy: no returns
offer heatnshield:
- in stock #: 5
- sold #: 23
- price: $59.99
- item condition:
- Used
- New other (see details)
- options: ship-to-home
- started: january 10, 2025
- availability: in stock
- best offers: true
shipping heatnshield:
- transit: 5-12 days
- service: usps ground advantage
- class: standard
- type: calculated
- carrier: usps
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