King MB5706SI STD SI Main Bearings Hyundai/Kia Gamma 1.6L G4FC G4FD G4FJ Turbo

Vehicle Fitment

• 2011-2017 Hyundai Accent (GS, GLS, SE, Sport, FWD, 1.6L I4 G4FC MPI)
• 2011-2016 Hyundai Elantra (GLS, Limited, SE, Sport, FWD, 1.6L I4 G4FC MPI / G4FD GDI)
• 2017-2020 Hyundai Elantra Sport / Elantra GT N-Line (FWD, 1.6L Turbo I4 G4FJ T-GDI)
• 2008-2012 Hyundai i30 (FD, Base, CW, FWD, 1.6L I4 G4FC MPI)
• 2013-2016 Hyundai i30 (GD, Base, FWD, 1.6L I4 G4FC MPI / G4FD GDI)
• 2017-2021 Hyundai i30 (PD, Base, N-Line, FWD, 1.6L Turbo I4 G4FJ T-GDI)
• 2017-2020 Hyundai Kona (OS, Base, SEL, Limited, FWD/AWD, 1.6L Turbo I4 G4FJ T-GDI)
• 2015-2021 Hyundai Tucson (TL, Base, SE, Sport, Value, FWD/AWD, 1.6L Turbo I4 G4FJ T-GDI)
• 2012-2019 Hyundai Veloster (FS, Base, Turbo, Turbo R-Spec, FWD, 1.6L I4 G4FC / G4FJ T-GDI)
• 2018-2021 Kia Cerato GT (BD, FWD, 1.6L Turbo I4 G4FJ T-GDI)
• 2013-2017 Kia Cerato Koup / Forte Koup (YD, SX, SX Luxury, FWD, 1.6L Turbo I4 G4FJ T-GDI)
• 2014-2018 Kia Forte / Forte5 (SX, SX Luxury, FWD, 1.6L Turbo I4 G4FJ T-GDI)
• 2011-2017 Kia Rio (UB, LX, EX, SX, FWD, 1.6L I4 G4FC MPI)
• 2019-2021 Kia Seltos (ER812, S, EX, SX, FWD/AWD, 1.6L Turbo I4 G4FJ T-GDI)
• 2009-2014 Kia Soul (AM, Base, Plus, FWD, 1.6L I4 G4FC MPI)
• 2017-2021 Kia Soul (PS, Base, FWD, 1.6L Turbo I4 G4FJ T-GDI)

Fitment Notes

• Fits Hyundai/Kia Gamma 1.6L I4 engine codes G4FC (MPI), G4FD (GDI), and G4FJ (T-GDI Turbo) sharing the same main journal diameter - confirm engine code before ordering
• Standard (STD) size - for use on crankshafts at factory main journal diameter; always measure journals before ordering
• SI Series = bi-metal aluminum silicon construction with 2.5-3% silicon; ideal OE-replacement grade for both naturally aspirated and turbocharged Gamma 1.6L applications
• Does not fit the G4FA (1.4L MPI), G4FG (1.6L Gamma II MPI), or G4FM (1.6L Gamma II Turbo GDI) - those engines use different bearing part numbers; confirm engine code before ordering
• Available in +0.25mm and +0.50mm undersizes under separate part numbers for ground crankshafts
• Hyundai Tucson 1.6L T-GDI (G4FJ) confirmed fitment for 2015-2021 - covers both FWD and AWD variants

Features

• SI Series bi-metal aluminum silicon construction with 2.5-3% silicon for enhanced strength and wear resistance on nodular cast iron and steel crankshafts
• Excellent seizure resistance with cast iron and aluminum crankshaft surfaces - silicon particles continuously polish journal surfaces to prevent seizure
• Thick lining design provides superior embeddability, absorbing both small and large contaminant particles circulating in the oil
• Lead-free construction meets current environmental compliance standards
• Full 5-pair set covers all main crankshaft journals in the inline-4 engine
• Tight wall thickness tolerances ensure consistent oil clearance across all 5 main journals
• Suitable for OE replacement and street rebuild applications across all naturally aspirated and turbocharged G4FC/G4FD/G4FJ variants
• Manufactured under IATF 16949 and SAE AS 9100 certified quality control

Specifications

• Part Number: MB5706SI
• Size: Standard (STD)
• Series: SI (Bi-Metal Aluminum Silicon - OE Replacement)
• Engine: Hyundai/Kia Gamma 1.6L DOHC I4 (G4FC MPI / G4FD GDI / G4FJ T-GDI)
• Displacement: 1,591cc (97 cu in)
• Crankshaft Journal Diameter (STD): 50.00 / 49.98 mm (1.9685 / 1.9677 in)
• Housing Bore Diameter (STD): 54.01 / 53.99 mm (2.1264 / 2.1256 in)
• Position: Crankshaft Main (Upper and Lower shells)
• Quantity: 5 pairs (10 shells total - full I4 main bearing set)
• Available Sizes: STD / +0.25mm / +0.50mm

Included Components

• 5x Upper Main Bearing Shells
• 5x Lower Main Bearing Shells

Product Description

The King MB5706SI is a standard-size crankshaft main bearing set engineered for the Hyundai/Kia Gamma 1.6L inline-4 engine family, covering the G4FC (MPI), G4FD (GDI), and G4FJ (T-GDI Turbo) engine codes across a wide range of compact Hyundai and Kia models from 2008 through 2021. The SI Series uses King's proven bi-metal aluminum silicon structure with 2.5-3% silicon content - a material specifically suited to both naturally aspirated and turbocharged applications, providing excellent seizure resistance, embeddability, and conformability on both cast iron and steel crankshafts.

As a standard-size set, the MB5706SI fits Gamma 1.6L crankshafts at factory main journal diameter and installs without grinding or modification. It is the correct OE-replacement choice for engine rebuilds on the Accent, Elantra, Elantra Sport, Veloster, Tucson, Kona, i30, Rio, Forte, Soul, Seltos, and Cerato where the crankshaft is within factory specification. Always confirm the specific engine code and measure crankshaft journals before ordering - undersized variants are available under separate part numbers.