1-5/8-Inch Shorty Headers (04-15 5.6L Titan)Find parts that fit my vehicle

Depending on your engine and type of vehicle, the exhaust manifold can either be a set of pipes or it can be a cast iron manifold assembly. Essentially the exhaust manifold takes the burned exhaust gases from the engine's cylinders and ejects the gas through the exhaust system and out through the car's tail pipe. The exhaust manifold gasket seals the surface of the exhaust manifold to the surface of the cylinder head, preventing leaks in the system. Over time, the constant expansion and contraction of the components (caused by constant heating and cooling in the engine), may cause the gasket to leak. These leaks can be hazardous as hot exhaust gases escape and can damage other components in the engine compartment. A leaky exhaust manifold gasket can also impact engine performance. So replace your gasket and regain back lost performance. Replace for 04-15 Nissan Titan 04-13 Infiniti QX56 05-15 Nissan Armada Fits Header Model HDS-NT04-56L, HDS-NT04-56L-LT
Easy Installation
Plug-n-play Operation, Direct Bolt-on OE Fitment or Replacement for the Stock Unit.Requires no Drilling.
Note: ​Installation instruction is not included. Professional installer is highly recommended.

Importance of Header Gasket Set
While exhaust manifold collects gases from multiple cylinders and routes them into the exhaust pipe, the gasket acts as a seal between the exhaust manifold and cylinders. The better our engine works at inhaling and exhaling, the better our driving experience. In a way, the gasket helps the engine breathe.
Over time, extreme temperatures, oil, coolant contamination, and the constant barrage of exhaust gas will wear down the gasket. With a wore down gasket, leakage will be developed between the cylinder head and manifold, which then reduce the velocity of the exhaust stream. As a result, our car lose power.
When you notice a spitting type of sound from the engine compartment, especially during heavier acceleration or climbing up a hill, it is necessary to check your engine for any wore down gasket as that might be a reason for the noise.

High Quality of DNA
Our professional technicians do heavy research and development in testing car applications and fitments for our products.
We also do rigorous testing on the strength, durability, as well as longevity of the material in order to make sure when the product arrives at the consumers end that it’s ready to go without worries.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov