
12645491 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $37.65 | Top Pick! Condition is New, Genuine GM Driver Side Exhaust Manifold Heat Shield 12645491, FREE SHIPPING | 99.2% |
![]() | $37.88 | Condition is New, GM OEM 16-19 CTS Exhaust System Manifold-Heat Shield 12645491, FREE SHIPPING | 99.2% |

GM OEM Replacement Exhaust Manifold Heat Shield (12645491)
The GM OEM Replacement Exhaust Manifold Heat Shield (12645491) is a crucial component designed to protect the undercarriage of your vehicle from extreme heat generated by the exhaust system. This heat shield is engineered specifically for select GM models and is an exact replacement for the original part, ensuring a perfect fit and function.
Constructed from high-quality materials, this heat shield is designed to withstand the harsh conditions of the engine bay. It features a durable insulation layer that effectively absorbs and redirects heat away from sensitive components, such as wiring harnesses and other vital undercarriage parts. This helps maintain optimal operating temperatures for these components and prevents potential damage caused by excessive heat.
The design of this heat shield is precise, allowing it to fit seamlessly around the exhaust manifold and other related components. The shield's contoured shape adheres to the complex shapes and angles of the engine bay, ensuring a snug fit that minimizes vibrations and maintains its position even during rigorous driving conditions.
Installation of the GM OEM Replacement Exhaust Manifold Heat Shield (12645491) is straightforward and can typically be completed in a short amount of time. The shield comes with all necessary hardware, making the process hassle-free for DIY enthusiasts. For those who prefer professional installation, it can be easily sourced from a trusted mechanic or repair shop.
Investing in this OEM replacement heat shield not only ensures the longevity of your vehicle but also helps maintain its performance and efficiency. By protecting sensitive components from the damaging effects of extreme exhaust heat, you'll enjoy a smoother, more reliable driving experience.
In summary, the GM OEM Replacement Exhaust Manifold Heat Shield (12645491) is a vital component that safeguards your vehicle from the harsh conditions of the engine bay. Its high-quality materials, precise design, and easy installation make it an essential upgrade for any GM vehicle owner seeking to optimize their driving experience and protect their investment.
Buying a GM part number 12645491 driver exhaust manifold heat shield involves considering both its potential benefits and drawbacks. Here's a detailed analysis:
Benefits:1. Protection: The primary function of an exhaust manifold heat shield is to protect other engine components from excessive heat generated by the exhaust system. Installing this heat shield can help prevent damage to sensitive parts such as wires, hoses, and gaskets.
2. Improved Comfort: By insulating the engine from the heat generated by the exhaust system, the heat shield can make the cabin of the vehicle more comfortable, especially during long drives or in hot weather conditions.
3. Durability: GM manufactures high-quality parts, and this heat shield is no exception. It is designed to withstand the rigors of regular use and is likely to last for an extended period.
4. OEM Part: Using an Original Equipment Manufacturer (OEM) part like this ensures that it fits perfectly and functions optimally. It can also maintain the vehicle's resale value and provide peace of mind knowing that a genuine GM part is being used.
Drawbacks:1. Cost: Replacing an exhaust manifold heat shield can be a costly repair, especially if it is being done as part of a larger repair or maintenance project. The price of the GM part number 12645491 can vary depending on the retailer, and it may be more expensive than aftermarket alternatives.
2. Installation Time: Installing the heat shield can be a time-consuming process, especially for those without mechanical experience. Depending on the vehicle and the complexity of the installation, it could take several hours to complete the job.
3. Availability: In some cases, it may be difficult to find this particular heat shield in stock at local parts stores or repair shops. Ordering it online may be necessary, which could add additional wait time for the part to arrive.
Conclusion:The decision to buy a GM 12645491 driver exhaust manifold heat shield ultimately depends on the individual's specific circumstances. If the engine components are at risk of heat damage, or if the vehicle is used frequently in extreme weather conditions, the benefits of this heat shield may outweigh the cost and installation time. Additionally, using an OEM part like this can provide peace of mind and maintain the vehicle's value. However, for those on a tight budget or with minimal mechanical experience, it may be worth considering aftermarket alternatives or foregoing the heat shield altogether.
Recommendation:Before making a decision, it is recommended to consider the potential risks and benefits of installing an exhaust manifold heat shield. Factors such as the vehicle's usage, exposure to extreme temperatures, and budget should be taken into account. If the decision is made to proceed with the purchase and installation of the GM 12645491 driver exhaust manifold heat shield, it is recommended to use a reputable parts supplier and follow the installation instructions carefully to ensure proper installation and optimal performance.
Details:
Just didn't like it. Changed my mind. Found a better price.
specifications heatnshield:
- brand: Gm
- mpn: 12645491
- part type: Heat Shield Driver Exhaust Manifold
- genuine oem: Yes
- warranty: 1 Year
- fitment type: Direct Replacement
- make: Cadillac
- year: 2016 2017 2018 2019
- parts included: Only Part Reference 4 On The Diagram Is Included
general heatnshield:
- category: Auto Parts > Car Truck Accessories > Exhaust Emission Systems > Heat Shields, Wraps Sleeves
offer heatnshield:
- prices: $37.65–$37.88
- item condition: New
- options: ship-to-home
- availability: in stock
- sold #: 19
- in stock #: 2
- started: may 19, 2025
returns heatnshield:
- time: 30 days
- paid by: buyer
- policy: returns accepted
payments heatnshield:
- other
- wallet: google-pay
- credit card: visa
seller heatnshield:
- city: garland, texas
- rating: 96.6%
- # reviews: 19072
shipping heatnshield:
- transit: 4-11 days
- service: fedex ground or fedex home delivery
- carrier: fedex
- class: standard
- type: fixed
Recently Viewed:
- 12634651: OIL FLOW VALVE HEAT SHIELD ENGINE PUMP, Gm
- G7020: HEAT STOVE MOUNT PIN, Gm Genuine Parts
- 12579527: HEAT SHIELD EXHAUST MANIFOLD, Gm Genuine Parts
- 12690936: HEAT SHIELD CONVERTER, Gm Genuine Parts
- 23187568: HEAT SHIELD EXHAUST, Gm Genuine Parts
- 19403107: HEAT SHIELD EXHAUST, Gm Genuine Parts
- 23187567: HEAT SHIELD EXHAUST, Gm Genuine Parts
- 55494514: HEAT SHIELD CONVERTER, Gm Genuine Parts
- 20908787: HEAT SHIELD EXHAUST MUFFLER, Gm Genuine Parts
- 13238806: SHIELD EXHAUST MUFFLER, Gm Genuine Parts
- 95483684: SHIELD EXHAUST MUFFLER, Gm Genuine Parts

