Before you order: GM part numbers change by option code and year. Confirm against your VIN with a GM dealer. Callout numbers on this page are our own and do not match GM's diagram numbers. Quantities are per vehicle (both sides).
Engine: this page covers the V6 only: 3.0L (LF1 2010, LFW 2011-2012) and 3.6L (LFX 2013-2017). For the 2.4L, see Manifolds 2.4L. On the V6 each exhaust manifold is built into its catalytic converter, so GM sells them as one part (16, 17). The V6 high-pressure fuel pump is on the Cylinder Head V6 page. The drawing is simplified and not to scale.
Engine: this page covers the V6 only: 3.0L (LF1 2010, LFW 2011-2012) and 3.6L (LFX 2013-2017). For the 2.4L, see Manifolds 2.4L. On the V6 each exhaust manifold is built into its catalytic converter, so GM sells them as one part (16, 17). The V6 high-pressure fuel pump is on the Cylinder Head V6 page. The drawing is simplified and not to scale.
| # | Part | GM OEM # | Fitment & notes | Buy |
|---|---|---|---|---|
| 1 | Manifold, upper intake (with runner inserts) | 12699182 | V6 3.0L and 3.6L. | Check price on Amazon |
| 2 | Insert, upper intake manifold (93 mm) | 12647375 | V6. Qty 6. Part of manifold (1). | Check price on Amazon |
| 3 | Gasket kit, upper intake manifold (6 gaskets) | 12647263 | V6. | Check price on Amazon |
| 4 | Manifold, lower intake | 12611155 | V6 3.0L and 3.6L. | Check price on Amazon |
| 5 | Gasket, lower intake manifold | 12735535 current 12673301 superseded | V6. 12673301 is replaced by 12735535. | Check price on Amazon |
| 6 | Gasket kit, intake manifold (upper, lower and throttle body gaskets) (not illustrated) | 12735542 current 12691199 superseded | V6. GM lists 12691199 for 2010-2017 and shows it as replaced by 12735542. | Check price on Amazon |
| 7 | Body, throttle | 12694878 3.0L 2010-2011 12670981 2012-2017 | V6. | Check price on Amazon |
| 8 | Gasket, throttle body | 12634371 | V6. Also in kit 6. | Check price on Amazon |
| 9 | Bolt, throttle body (M6x1x50) | 11588718 | V6. GM: install with adhesive 19333511. | Check price on Amazon |
| 10 | Sensor, manifold absolute pressure (MAP) | 55573248 | V6 and 2.4L. | Check price on Amazon |
| 11 | Valve, EVAP canister purge solenoid | 12737252 current 12690512 superseded | V6. 12690512 is replaced by 12737252. | Check price on Amazon |
| 12 | Shield, fuel rail noise | 12643901 upper 12678248 lower | V6. | Check price on Amazon |
| 13 | Tube, PCV (fresh air) | 12634421 3.0L 2010 12639419 3.0L 2011-2012 12649214 3.6L 2013-2017 | V6. | Check price on Amazon |
| 14 | Tube, PCV (foul air, with O-ring) | 12634292 | V6. Includes O-ring 12616909. | Check price on Amazon |
| 15 | Cover, intake manifold (engine cover, with emblem) | 12653322 2010 2nd design-2017 12630567 2010 1st design 12654180 with bracket 12639305 | V6. GM lists several covers by design; the 2010 1st design has no hole above the oil filler. Check your VIN. | Check price on Amazon |
| 16 | Converter, 3-way catalytic with exhaust manifold (front) | 19420249 2012-2017 19418952 3.0L 2010-2011, driver side | V6. On the V6 the exhaust manifold and catalytic converter are one part. For 2010-2011 GM lists the converters by side; check your VIN. | Check price on Amazon |
| 17 | Converter, 3-way catalytic with exhaust manifold (rear) | 19420245 2012-2017 19418935 3.0L 2010-2011, passenger side | V6. Same note as 16. | Check price on Amazon |
| 18 | Gasket, catalytic converter pipe (4 holes) | 20893953 | V6. Qty 2. | Check price on Amazon |
| 19 | Stud, exhaust manifold pipe (M10x1.5x20) | 11610978 | V6. Qty 4-8 per GM. | Check price on Amazon |
| 20 | Sensor, heated oxygen (pre-catalyst) | 12634061 2012-2017 12612430 3.0L 2010-2011 | V6. Qty 2 (one per bank). | Check price on Amazon |
| 21 | Shield, exhaust manifold lower heat (knock sensor shield) (not illustrated) | 12593759 | V6. Also listed on the Engine Block V6 page. | Check price on Amazon |
| 22 | Shield, catalytic converter front heat | 22817994 | V6 2012-2017. | Check price on Amazon |
The illustration is an original drawing made for this site. It is not to scale and the shapes are representative.