Coolant Reservoir Cap 3B0121321 – Replacement for Audi A1, A3, A4, S3, S4

Description

Water Bottle Cap

The Water Bottle Cap is a direct replacement part designed to fit a wide range of Audi models. This cap ensures a secure seal to maintain the correct pressure and prevent leaks in the cooling system, ensuring optimal engine performance.

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Key Features:

✔ OEM-Quality Fit – Designed to meet manufacturer specifications for a perfect fit.
✔ Durable Construction – Built to withstand high temperatures and coolant system pressure.
✔ Prevents Leaks – Ensures a tight seal to maintain the integrity of the cooling system.
✔ Easy Installation – Direct replacement for a hassle-free installation.

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Part Number:

3B0 121 321

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Compatibility:

The Water Bottle Cap is compatible with the following Audi models:

Audi A1 / S1 (8X1, 8XK) (2011 – 2019)

• 1.2 TFSI (CBZA) – 63 kW / 86 HP
• 1.4 TFSI (CAVG|CTHG) – 136 kW / 185 HP
• 1.4 TFSI (CAXA|CNVA) – 90 kW / 122 HP
• 1.6 TDI (CAYC) – 77 kW / 105 HP

Audi A1 / S1 Sportback (8XA, 8XF) (2012 – 2019)

• 1.2 TFSI (CBZA) – 63 kW / 86 HP
• 1.4 TFSI (CAVG|CTHG) – 136 kW / 185 HP
• 1.4 TFSI (CAXA|CNVA) – 90 kW / 122 HP
• 1.6 TDI (CAYC) – 77 kW / 105 HP

Audi A3 / S3 Sportback (8PA) (2005 – 2013)

• 1.4 TFSI (CAXC|CMSA) – 92 kW / 125 HP
• 1.6 TDI (CAYC) – 77 kW / 105 HP
• 1.8 TFSI (BYT|BZB|CDAA) – 118 kW / 160 HP
• 1.9 TDI (BKC|BLS|BXE) – 77 kW / 105 HP
• 2.0 FSI (AXW|BLR|BLX|BLY|BMB|BVY|BVZ) – 110 kW / 150 HP
• 2.0 TDI 16V (BKD|CBAB|CFFB|CLJA) – 103 kW / 140 HP
• 2.0 TFSI (AXX|BWA|CAWB|CBFA|CCZA) – 147 kW / 200 HP
• 3.2 V6 quattro (BDB|BMJ|BUB) – 184 kW / 250 HP
• RS3 quattro (CEPA) – 250 kW / 340 HP
• S3 quattro (CDLC) – 188 kW / 256 HP

Audi A3 / S3 Sportback (8VA, 8VF) (2013 – 2021)

Audi A4 Allroad B8 (8KH) (2012 – 2017)

• 2.0 TDI quattro (CGLC) – 130 kW / 177 HP
• 2.0 TFSI quattro (CDNC|CPMA) – 155 kW / 211 HP
• 2.0 TFSI quattro (CNCD) – 165 kW / 224 HP

Audi A4 / S4 B8 Avant (8K5) (2008 – 2017)

• 1.8 TFSI (CABB|CDHB) – 118 kW / 160 HP
• 1.8 TFSI (CJEB) – 125 kW / 170 HP
• 2.0 TDI (CAGA|CJCA|CMEA|CMFA) – 105 kW / 143 HP
• 2.0 TDI (CGLC) – 130 kW / 177 HP
• 2.0 TFSI (CAEB|CDNC) – 155 kW / 211 HP
• 3.0 TDI quattro (CAPA|CCLA|CCWA) – 176 kW / 240 HP
• S4 quattro (CAKA|CCBA|CGWC|CGXC|CREC|CTUB) – 245 kW / 333 HP

Audi A4 / S4 B8 (8K2) (2008 – 2017)

• 1.8 TFSI (CABA|CDHA) – 88 kW / 120 HP
• 1.8 TFSI (CABB|CDHB) – 118 kW / 160 HP
• 1.8 TFSI (CJEB) – 125 kW / 170 HP
• 2.0 TDI (CAGA|CJCA|CMEA|CMFA) – 105 kW / 143 HP
• 2.0 TDI (CAGB|CJCB|CSUB) – 100 kW / 136 HP
• 2.0 TDI (CAHA) – 125 kW / 170 HP
• 2.0 TDI (CGLC|CMGB) – 130 kW / 177 HP
• 2.0 TFSI (CAEA|CDNB|CFKA) – 132 kW / 180 HP
• 2.0 TFSI (CAEB|CDNC) – 155 kW / 211 HP
• 2.0 TFSI (CNCD) – 165 kW / 224 HP
• 3.0 TDI quattro (CAPA|CCLA|CCWA) – 176 kW / 240 HP
• 3.0 TDI quattro (CDUC|CKVB|CKVC) – 180 kW / 245 HP
• 3.0 TFSI quattro (CMUA|CRED) – 200 kW / 272 HP
• S4 quattro (CAKA|CCBA|CGWC|CGXC|CREC|CTUB) – 245 kW / 333 HP

Audi A3 Convertible (8P7) (2008 – 2013)

• 1.8 TFSI (BZB|CDAA) – 118 kW / 160 HP
• 2.0 TFSI (CAWB|CCZA) – 147 kW / 200 HP

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Installation Notes:

• Direct Replacement – Designed to fit OEM specifications for a hassle-free replacement.
• Check for Compatibility – Ensure the part matches your vehicle’s specifications before installation.
• Coolant System Inspection – Check the coolant reservoir and hoses for leaks or wear when replacing the cap.

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