The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings.

Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings are available for many of the popular 4, 6 & 8 cylinder applications and feature:

• High strength overlay plate with reduced thickness for improved fatigue properties
• Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing.
• Increased crush for improved bearing retention
• Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing.
• Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films.
• 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings.
• Tight consistent wall tolerances to help you maintain consistent clearances.
• Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.

Contents of Kit 5B1606H-.25

• 1x 4B1606H-.25 - Con rod bearing set (ACL Race Series)
• 1x 1B1606H-.25 - Con rod bearing set (ACL Race Series)

Applications 

• Audi 100 C2 Avant (435, 436) CN 2.0 D
• Audi 100 C2 Saloon (431, 433, 434) CN 2.0 D
• Audi 100 C3 Avant (445, 446) KP 2.0 E / RT 2.0 E Cat / DE 2.0 TD / CN 2.0 D / NC 2.0 TD / KU 2.2 Cat / HX 2.2 Cat / KU 2.2 Cat Quattro / HX 2.2 Cat Quattro / KU 2.2 / KU 2.2 Quattro / PX 2.2 E Quattro / 3D 2.4 D / MC 2.2 Turbo / MC 2.2 Turbo Quattro / MC 2.2 Quattro / SL 2.0 / KZ 2.2 / NF 2.3 / NF 2.3 Quattro
• Audi 100 C3 Saloon (443, 444) RT 2.0 E Cat / KU 2.2 Cat / KU 2.2 Cat Quattro / CN 2.0 D / DE 2.0 TD / KP 2.0 E / KU 2.2 / KU 2.2 Quattro / PX 2.2 E Quattro / SL 2.0 / MC 2.2 Turbo / MC 2.2 Turbo Quattro / 3D 2.4 D / WX 2.2 Quattro / MC 2.2 / MC 2.2 Quattro / NF 2.3 / NF 2.3 Quattro / KZ 2.2 / HX 2.2 Cat / HX 2.2 Cat Quattro
• Audi 100 C4 Avant (4A5) AAS 2.4 D / AAR 2.3 / AAR 2.3 Quattro
• Audi 100 C4 Saloon (4A2) AAS 2.4 D / AAR 2.3 / AAR 2.3 Quattro
• Audi 200 C3 Avant (447, 448) MC 2.2 Turbo / MC 2.2 Turbo Quattro / JY 2.1 Turbo Quattro / KG 2.1 Turbo Quattro / NF 2.3
• Audi 200 C3 Saloon (447, 448) KG 2.1 Turbo / KG 2.1 Turbo Quattro / KU 2.2 / MC 2.2 Turbo / MC 2.2 Turbo Quattro / NF 2.3
• Audi 4000 (USA) NG 2.3 / KX 2.2 / JT 2.2
• Audi 5000 (USA) MC 2.2 Turbo / DE 2.0 TD / KZ 2.2 / NF 2.3 / CN 2.0 D
• Audi 80 B2 Saloon (811, 813, 814, 819, 853) KX 2.2 / HY 2.2 Quattro / HP 2.0 / JL 2.0 / JS 2.0 / JS 2.0 Quattro / JT 2.2
• Audi 80 B3 Saloon (893, 894, 8A2) NG 2.3 / NG 2.3 Quattro
• Audi 80 B4 Avant (8C5) NG 2.3 / NG 2.3 Quattro
• Audi 80 B4 Saloon (8C2) NG 2.3 / NG 2.3 Quattro
• Audi 90 B2 (813, 814, 853) KX 2.2 / SK 2.0 / JS 2.0 Quattro / JT 2.2 Quattro / HP 2.0 / JS 2.0 / KV 2.2 / HY 2.2 / KV 2.2 Quattro / KV 2.2 / KV 2.2 Quattro / NG 2.3 / 7A 2.3 E 20V Quattro / PS 2.0 / 7A 2.3 E 20V / NM 2.0 20 V / NM 2.0 20 V Quattro / NG 2.3 Quattro
• Audi A6 C4 (4A2) AAR 2.3 / AAR 2.3 Quattro
• Audi A6 C4 Avant (4A5) AAR 2.3 / AAR 2.3 Quattro
• Audi Cabriolet B3 (8G7) NG 2.3
• Audi Coupe B2 (81, 855, 856) KX 2.2 GT / NG 2.3 Quattro / SK 2.0 / JT 2.2 Quattro / NG 2.3 / HP 2.0 / JS 2.0 / HY 2.2 GT / KV 2.2 GT / KV 2.2 Quattro
• Audi Coupe B3 (89, 8B3) 7A 2.3 20V Quattro / NM 2.0 20 V / NM 2.0 20 V Quattro / 7A 2.3 20V / NG 2.3 Quattro / NG 2.3 / KV 2.2 / KV 2.2 Quattro
• Audi Quattro (85) WX 2.1 Turbo Quattro / KW 2.1 20V Turbo / GV 2.1 Turbo / WR 2.1 Turbo
• Volkswagen California T4 AJA 2.4 D / T4 AEU 2.5 / T4 AET 2.5 / T4 APL 2.5 / T4 AVT 2.5
• Volkswagen Passat B2 (32B) KV 2.2 / HP 2.0 / JS 2.0 / KX 2.2
• Volkswagen Passat B2 Saloon (32B) KX 2.2 / HP 2.0 / JS 2.0
• Volkswagen Passat B2 Variant (33B) KV 2.2 / HP 2.0 Syncro / JS 2.0 Syncro / HP 2.0 / JS 2.0 / HY 2.2 Syncro / KX 2.2 / JT 2.2 Syncro / KX 2.2 Syncro
• Volkswagen Quantum (USA) JT 2.2 / KX 2.2
• Volkswagen Santana (32B) HP 2.0 / JS 2.0 / KX 2.2
• Volkswagen Transporter Passenger VAN AAB 2.4 D
• Volkswagen Transporter T4 ACU 2.5 Syncro / ACU 2.5 / APL 2.5 / APL 2.5 Syncro / AEU 2.5 Syncro / AET 2.5 / AVT 2.5 / AET 2.5 Syncro / AVT 2.5 Syncro / AJA 2.4 D / AAB 2.4 D / AEN 2.5 / AEU 2.5 / AAF 2.5 / AAF 2.5 Syncro