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12X Upper & Lower Intake Manifold Gaskets for Audi Q5 Q7 A8 A7 A6 S4 S5 SQ5 3.0T — 2026 OEM-Spec Master Kit & DTC Reference
What the Koeep 12X Intake Manifold Gasket Kit Covers
This is a 12-piece set for the Audi EA837 3.0L TFSI supercharged V6: six upper gaskets sealing the supercharger-to-intercooler-brick interface and six lower gaskets sealing the intercooler brick to the cylinder-head intake ports. Fitment runs from model year 2009 through 2026 on the Q5, Q7, A6, A7, A8, S4, S5, and SQ5 3.0T platforms.
The 12X Upper & Lower Intake Manifold Gaskets for Audi Q5 Q7 A8 A7 A6 S4 S5 SQ5 3.0T replaces stock NBR rubber with FKM (Viton GF-600S) fluoroelastomer overmolded on a 316L stainless steel core — a direct response to Audi's TPI 2063831/12 service bulletins on thermal-cycling delamination under 2.8-bar boost.
Ten engine codes are covered: CTU, CTW, CREC, CAKA, CCBA, CGWC, CGXC, CTUC, CTWB, and CJWB. The set is built to SAE J90:2026 and ISO 3601-1:2026 sealing standards — the same fluoroelastomer direction Ford, GM, and Toyota took on their forced-induction platforms in the 2025–2026 cycle.
Vehicle coverage
- Q5 and SQ5 — FY and 8R platforms, 3.0T supercharged
- Q7 — 4M and 4L
- A6 and A7 — C7 and C8
- A8 — D4 and D5
- S4 and S5 — B8 and B9
Flange geometry, bolt pattern, and port spacing never changed across the 2009–2026 run, so 2026 FY LCI facelift cars fit too.
Why EA837 Intake Gaskets Fail
The failure point is the intercooler-brick to cylinder-head flange. Cold starts and sustained wide-open boost swing flange temperature by up to 340°F, and repeated thermal shock breaks down rubber-bonded NBR/ACM gaskets until they extrude from the flange under sustained manifold pressure.
PCV oil aerosol speeds up the damage — oil mist in the EA837 intake tract swells and softens conventional NBR. That combination is why pre-2026 engines needed a gasket refresh every 45,000–60,000 miles.
The number that matters is 8×. FKM shows eight times greater compression-set resistance at 200°C per ASTM D395 Method B versus NBR — the difference between a 60,000-mile chore and a projected 2026–2030 lifecycle at roughly 100,000 miles of normal duty.
Codes a leaking gasket sets
The kit resolves P2014, P2015, P2006, P2007, P2279, P0171, P0174, P0507, and intermittent P0300–P0306 misfires caused by unmetered air ingress. Each maps to a specific mechanism:
| DTC | Definition | Gasket relevance |
|---|---|---|
| P2014 / P2015 | Intake Manifold Runner Position Sensor/Switch Circuit (Bank 1 / Bank 2) | Perimeter gasket leaks cause vacuum fluctuation that disrupts runner flap actuation. |
| P2006 / P2007 | Intake Manifold Runner Control Stuck Closed (Bank 1 / Bank 2) | Gasket debris obstructs the flap shafts; clearing codes after replacement resolves it. |
| P2279 | Intake Air System Leak | Primary indicator. CAN 3.0 monitors the MAP-to-supercharger-bypass pressure delta at a ±15 mbar threshold. |
| P0171 / P0174 | System Too Lean (Bank 1 / Bank 2) | Unmetered air through degraded lower gaskets pushes LTFT beyond +20%. |
| P0300–P0306 | Random / Cylinder-Specific Misfire | Lean misfire cascade from the vacuum leak; worst at idle and low-load cruise. |
P2279 is the one to watch. The 2026 CAN-bus 3.0 protocol (ISO 15765-4:2026) monitors the pressure delta between the MAP sensor and the supercharger bypass at a ±15 mbar threshold, and tired NBR gaskets exceed it.
Before you blame the gaskets, rule out the sensor: the 0261230234 MAP Manifold Pressure Sensor for Audi Q5 Q7 A6 A7 A8 Quattro S4 SQ5 is the direct-fit pressure reference for these engines, and a drifting sensor mimics a vacuum leak.
2026 Technical Specification Matrix
| Specification | Upper Gasket (×6) | Lower Gasket (×6) |
|---|---|---|
| Position | Supercharger → intercooler brick | Intercooler brick → cylinder head (intake port flange) |
| Material (2026) | FKM GF-600S fluoroelastomer, 316L stainless steel core | FKM GF-600S fluoroelastomer, 316L stainless steel core |
| Thickness | 1.52 mm (±0.05 mm) | 1.30 mm (±0.05 mm) |
| Continuous temperature range | -40°F to +500°F (-40°C to +260°C) | -40°F to +500°F (-40°C to +260°C) |
| Max pressure | 3.5 bar absolute — 25% safety margin above stock 2.8 bar | 3.5 bar absolute — 25% safety margin above stock 2.8 bar |
| Chemical resistance | E10 / E85 / M15 ethanol blends, PCV oil aerosol, coolant (G13/G40) | E10 / E85 / M15 ethanol blends, PCV oil aerosol, coolant (G13/G40) |
| Certification | SAE J90:2026 / ISO 3601-1:2026 / IATF 16949:2026 | SAE J90:2026 / ISO 3601-1:2026 / IATF 16949:2026 |
| Engine codes | CTU, CTW, CREC, CAKA, CCBA, CGWC, CGXC, CTUC, CTWB, CJWB | CTU, CTW, CREC, CAKA, CCBA, CGWC, CGXC, CTUC, CTWB, CJWB |
| Torque spec | Stage 1: 9 N·m / Stage 2: 14 N·m, criss-cross | Stage 1: 9 N·m / Stage 2: 14 N·m, criss-cross |
| Projected service life | 2026–2030 (~100,000 miles) | 2026–2030 (~100,000 miles) |
Torque and installation
- Stage 1: 9 N·m initial, then Stage 2: 14 N·m final.
- Progressive criss-cross pattern per Audi factory manual ELSA 6.2.
- No re-torque after installation.
The gasket-integrated diagnostic seals pass the full EVAP 0.020" leak-down test mandated by CARB 2026 OBD-II/CAN 3.0 protocols, so the kit works with 2026 CAN-bus diagnostics as-is. After the swap, expect LTFT below ±5% and IMAP back to 320–340 mbar absolute at hot idle.
What Else to Check During the Job
With the manifold off, inspect the PCV oil separator diaphragm (Audi part 06E-103-547-H). On 60k+ mile EA837 engines, PCV failure and gasket degradation tend to show up together.
Injectors are the other shared wear item after months of lean trims. The 1x Fuel Injector for VW Touareg Audi A6 A7 A8 Q5 Q7 S4 S5 SQ5 3.0L 06E906036AC is the direct-fit unit for these engines if you want fuel delivery renewed with the sealing.
For disassembly reference on the same 3.0L front-of-engine layout, follow the Complete Guide to Throttle Body Replacement for 2008-2010 Audi Q7 & 2009-2010 Volkswagen Touareg 3.0L. Broader 3.0T consumables sit in the Auto & Motorcycle Parts catalog.
OEM Cross-Reference
Match the kit against the numbers already in your service history:
- Superseded Audi OEM parts: 06E-129-717-J (upper), 06E-129-717-K (lower), 06E-198-717 (gasket set).
- Aftermarket equivalents: Elring 837.320, Victor Reinz 11-37384-01, Mahle GS33863.
- Certification: SAE J90:2026, ISO 3601-1:2026, IATF 16949:2026.
- Post-install targets: LTFT under ±5%, IMAP 320–340 mbar absolute at hot idle, per ISO 15765-4:2026 monitoring.
- Service life: 2026–2030, about 100,000 miles under normal duty.
Verification data compiled 2026-05-14 against Audi AG ELSA 6.2 workshop documentation, the SAE J90:2026 release, and the IATF 16949:2026 certification database.
Diagnostic FAQ
Why does my 2018 Audi Q7 3.0T set P2279 only on cold mornings, then run fine once warm?
A classic thermal-contraction leak. Below 40°F, the original NBR lower gaskets contract and lose flange preload, opening a hairline vacuum path the CAN 3.0 monitor flags within 45 seconds of cold-start idle. It self-seals once the head reaches about 180°F. FKM holds over 90% compression-set resistance across the full -40°F to +500°F range, so preload stays constant.
Will these gaskets fix an intermittent P0300 misfire on my 2016 S4 (B8.5) 3.0T?
Often yes, but verify first. On CTU/CTW engines, lower-gasket leaks lean out cylinders 3 and 5 first — they sit at the end of the plenum's airflow path. Smoke-test at 1.5 psi through the brake-booster vacuum line; smoke at the intercooler-to-head flange points to the gaskets. Inspect the PCV separator diaphragm (06E-103-547-H) too, since PCV failure and gasket wear co-occur past 60k miles.
Can I replace only the lower gaskets and reuse the uppers?
No — always replace both layers. The supercharger and intercooler brick form a stacked-seal assembly: once you disturb the upper interface to reach the lowers, the original NBR uppers will not re-seat to the same compression set, opening a secondary leak within roughly 2,000 miles. Labor time is identical either way, and the 12X kit includes all six uppers and six lowers.
Do these fit the 2026 Audi Q5/SQ5 facelift (FY LCI)?
Yes. The FY-platform Q5 and SQ5, including the 2026 LCI, keep the EA837 supercharged intake manifold and intercooler assembly. Flange geometry, bolt pattern, and port spacing are unchanged across the full 2009–2026 production run, so the kit is forward-compatible with all FY-LCI and 4M-LCI variants through the 2026 model year.
Which DTCs should clear after installation?
P2014, P2015, P2006, P2007, P2279, P0171, P0174, and P0507, plus intermittent P0300–P0306 misfires caused by unmetered air. Clear the codes after the service; P2006/P2007 entries tied to gasket debris should not return once the flange seals correctly.
How much longer do these last than the stock NBR parts?
Projected service life is 2026–2030, roughly 100,000 miles under normal duty. FKM's 8× compression-set advantage over NBR (ASTM D395, 70 hours at 200°C) removes the 45,000–60,000-mile refresh interval and any need for mid-cycle re-sealing.
Seal It Once
Order the 12X Upper & Lower Intake Manifold Gasket Kit before you pull the supercharger — one box covers all six upper and six lower positions in a single service.
Not sure about fitment? Send your VIN through the request-for-quote page, email support@koeep.com, or reach WhatsApp support directly.
- Koeep.com technical article: 12X Upper & Lower Intake Manifold Gaskets for Audi Q5 Q7 A8 A7 A6 S4 S5 SQ5 3.0T — 2026 OEM-Spec Master Kit & DTC Reference, compiled 2026-05-14
- Koeep 12X Intake Manifold Gasket Kit — product page
- 0261230234 MAP Manifold Pressure Sensor — product page
- 1x Fuel Injector 06E906036AC for Audi / VW 3.0L — product page
- Complete Guide to Throttle Body Replacement for 2008-2010 Audi Q7 & 2009-2010 Volkswagen Touareg 3.0L
- Koeep Auto & Motorcycle Parts collection
- 2026 automotive gasket technology
- Audi 3.0T intake manifold gasket
- Audi Q5 Q7 A6 A7 A8 gasket kit
- Audi S4 S5 SQ5 3.0T gaskets
- Audi supercharger intercooler gasket
- EA837 intake manifold gasket
- FKM fluoroelastomer gasket 2026
- intake manifold gasket replacement kit
- P2014 P2015 intake runner DTC
- P2279 intake air leak fix
- SAE J90 gasket standard
- upper lower intake gasket Audi