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1.6L 16v - M16A
Manufacturers
1.6L 16v - M16A
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Kit of ARP2000 rod bolts replacing the original bolts on the OEM rods of the SUZUKI M16A (Swift III and IV, SX4, Vitara).
The Suzuki M16A is a naturally aspirated 1.6-litre petrol four-cylinder (1,586 cc, 78 mm bore, 83 mm stroke) with 16 valves. It powers the Swift III and IV, the SX4, S-Cross and Vitara, as well as the Liana, Grand Vitara II, Jimny and the Fiat Sedici, with outputs from 87 to 142 hp depending on the model.
On the M16A, the caps of the original connecting rods are clamped by original rod bolts, which the ARP2000 bolts in this kit replace.
At every engine revolution, the rod and piston assembly pulls on the rod cap, and only its bolts hold it against these inertia loads. The original ones are intended for stock power and for a single installation.
The ARP2000 bolts in this kit take the place of the original rod bolts of the M16A. Material: ARP2000, an alloy steel developed by ARP, heat treated to 220,000 psi tensile strength, with threads rolled after heat treatment. Against classes 10.9 and 12.9 of original fasteners, between 150,800 and 176,900 psi minimum, the margin is 24 to 46%.
| Part number | Brand | Grade / material | Head | Thread | Under-head length |
|---|---|---|---|---|---|
| ARP-171-6001 | ARP | ARP2000 | Not published | Not published |
Assembly is done with ARP assembly grease, applied to the threads and under the bolt head.
ARP (Automotive Racing Products) came into being in the early 1970s, when Gary Holzapfel, who came from the aerospace industry, decided to tackle the engine failures caused in motorsport by inadequate fasteners. Today the brand produces thousands of part numbers in California for the cylinder head, the main bearings and the connecting rods, in materials suited to each application, with manufacturing known for its consistency.
| Brand | Model (chassis) | Engine code | Power | Years |
|---|---|---|---|---|
| SUZUKI | SWIFT III (MZ, EZ) | M16A | 125 hp | 2006-2015 |
| SUZUKI | SWIFT IV (FZ, NZ) | M16A | 136-142 hp | 2012-2017 |
| SUZUKI | SX4 (EY, GY) | M16A | 101-120 hp | 2006-2015 |
| SUZUKI | SX4 Sedan (GY, RW) | M16A | 101-120 hp | 2007-2015 |
| SUZUKI | SX4 S-CROSS (JY) | M16A | 116-126 hp | 2013-2022 |
| SUZUKI | VITARA (LY) | M16A | 116-126 hp | 2015- |
| SUZUKI | VITARA (ET, TA, TD) | M16A | 106 hp | 2005-2007 |
| SUZUKI | GRAND VITARA II (JT, TE, TD) | M16A | 99-106 hp | 2005-2015 |
| SUZUKI | LIANA (ER, RH_) | M16A | 103-107 hp | 2002-2007 |
| SUZUKI | LIANA Hatchback | M16A | 103-107 hp | 2001-2007 |
| SUZUKI | JIMNY (SN, JB_) | M16A | 103 hp | 2004- |
| FIAT | SEDICI (189_) | M16A | 107-120 hp | 2006-2014 |
| SUZUKI (CHANGAN) | SX4 Hatchback | M16A | 109 hp | 2007-2020 |
| SUZUKI (CHANGAN) | SX4 Sedan | M16A | 109 hp | 2006-2017 |
| SUZUKI (CHANGHE) | LIANA Sedan | M16A | 95-109 hp | 2005-2014 |
| SUZUKI (CHANGHE) | LIANA Hatchback | M16A | 95-109 hp | 2006-2014 |
| MARUTI SUZUKI | SX 4 | M16A | 87-106 hp | 2007-2014 |
An M16A pushed harder than stock asks more of every rod bolt, and a single bolt letting go ruins the rod, the piston and the block. Fitting a full set of ARP2000 bolts costs far less than rebuilding the bottom end.
Removing the connecting rods is the right time to replace their bearings: here are the ones that fit this engine.
| Connecting rod bearings M16A (1.6L) → |
A forged connecting rod starts as a steel billet, usually 4340, shaped hot under very high pressure: its material is denser and more homogeneous than that of a stock rod. Compared with an original rod, often made of sintered metal and designed for cost, a 4340 forged rod offers about +19% yield strength, +8% tensile strength and +19 to +37% fatigue strength. It is the foundation of a reliable high-power build. For your engine:
| Forged rods M16A (1.6L) → |
