059121737AM — Coolant Control Valve / Thermostat
059121737AM is the Volkswagen Group OE number for the coolant control valve and thermostat assembly fitted to the 3.0 TDI V6 engine family (the "059" engine prefix denotes V6 TDI). Aftermarket suppliers list compatible replacements under several functional names — control valve, thermostat, coolant control valve, and oil cooler — because the same physical assembly integrates thermostat regulation with coolant routing and (on some applications) oil cooler functions. All listings on this page are OE-equivalent replacements for 059121737AM.
Vehicle and engine compatibility
This OE valve is fitted to VW Group vehicles using the 3.0 TDI V6 engine family on the previous-generation chassis — spanning Audi (A4 B8, A5 8T/8F, A6 C7, A7 4G, A8 D4, Q5 8R, Q7 4L), Volkswagen (Touareg 7P, Amarok 2H V6 TDI), Porsche (Cayenne 92A, Macan 95B diesel), and the corresponding VAG-listed variants. Production years span approximately 2007–2018 (Q7 4L from 2007; most others 2010–2018). The current-generation chassis (A6 C8, A7 4K, A8 D5, Q7 4M, Q8, Touareg CR) use a different revision of this valve and are not covered by 059121737AM. See the detailed vehicle list below for chassis codes and date ranges.
Cross-referenced OE numbers
059121737AM is the latest revision in the 059121737 OE family. The aftermarket replacements listed below are typically backward-compatible with the following earlier or related VAG OE numbers:
- 059 121 737 G
- 059 121 737 H
- 059 121 737 J
- 059 121 737 AK
- 059 121 737 R
Porsche-branded equivalents on the same engines:
- 958 106 737 00
- 958 106 737 01
- 958 106 737 02
- 958 106 737 03
- 958 106 737 04
Verify the specific revision against your vehicle's documentation before ordering — some early revisions ship with a slightly different gasket or sensor configuration.
Replacement parts
16 options from major aftermarket suppliers. Pick the brand and price tier that matches your service needs.
€49.38
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€44.32
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€63.13
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€69.81
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€43.69
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€50.18
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€77.85
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€50.65
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€59.98
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€50.94
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€138.61
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€55.70
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28 business days
€54.92
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€35.79
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28 business days
Detailed vehicle compatibility
The product pages above list confirmed vehicle fitments at the chassis code, engine code, and production date level. Major model coverage:
Audi
- A4 — B8 — 3.0 TDI V6 quattro (2011–2016)
- A5 — 8T, 8F — 3.0 TDI V6 quattro (2011–2017)
- A6 — C7 — 3.0 TDI V6 quattro (2011–2018)
- A7 — 4G — 3.0 TDI V6 quattro (2010–2018)
- A8 — D4 — 3.0 TDI V6 quattro (2010–2018)
- Q5 — 8R — 3.0 TDI V6 quattro (2008–2017)
- Q7 — 4L — 3.0 TDI V6 quattro (2007–2015)
Volkswagen
- Touareg — 7P — 3.0 V6 TDI (2010–2018)
- Amarok — 2H — 3.0 V6 TDI (2016–2020)
Porsche
- Cayenne — 92A — 3.0 V6 TDI (2010–2018)
- Macan — 95B — 3.0 V6 TDI (2014–2018)
Aftermarket brands available
OE-equivalent replacements are produced by: