Best Complete Engine Rebuild Kit for UTVs and Cars

#1 · Best Overall

1. CL2 Powersports RZR 800 Kit

Best for: Polaris RZR 800 full-system rebuilds.

Why it ranks #1: Fits 2008–2014 Polaris RZR 800 models and lists pistons, cylinder, oil pump, valves, camshaft, crankshaft assembly, bearings, and filters.

CL2 Powersports includes a crankshaft assembly, cylinder, oil-pump assembly and water-pump components in its kit for 2008–2014 Polaris RZR 800 models. That broad coverage enables a rebuild plan spanning major rotating, sealing and fluid-pump parts, with valves, lifters, filters and spark plugs also specified.

Pistons and rings arrive alongside a cylinder, wrist pin and circlips, giving the kit a substantial set of listed cylinder and piston components. The oil-pump assembly and aluminum water-pump impeller with mechanical seal cover separate fluid systems, while the complete gasket and seal kits support sealing work. Valves, seals, lifters and a camshaft extend the valvetrain contents. Fitment is stated for all RZR 800 models from 2008 through 2014.

Skip it if you are rebuilding a Ranger 800 rather than an RZR; CL2 Powersports’ Ranger RGR 800 kit covers the listed 2008–2017 Ranger range.

This is a broad parts package for owners rebuilding a 2008–2014 Polaris RZR 800, with cylinder, crankshaft, pump and valvetrain components listed. Its fitment is RZR-specific, and the listing says images may be generic.

Listed on Amazon as: Complete Engine Motor Rebuild Kit for 2008-2014 Polaris RZR 800

#2 · Broadest Ranger Coverage

2. CL2 Powersports Ranger 800 Kit

Best for: Polaris Ranger 800 rebuild projects.

Why it ranks #2: Covers 2008–2017 Ranger 800 models, including 6×6, and lists cylinder, crankshaft assembly, oil pump, valves, bearings, and filters.

CL2 Powersports lists fitment for both 2008–2017 Polaris Ranger 800 models and Ranger 800 6×6 models, a useful distinction for owners choosing a platform-specific rebuild kit. The package includes a crankshaft assembly, cylinder, oil-pump assembly, and extensive sealing and valvetrain components.

Pistons, rings, wrist pin and circlips are paired with a cylinder, while complete gasket and seal kits support the sealing stages of an engine rebuild. The oil-pump assembly and aluminum water-pump impeller with mechanical seal address two pump systems. This kit also lists valve springs alongside valves, seals, lifters and a camshaft, plus oil and air filters and spark plugs. Its stated 6×6 coverage makes that model designation especially relevant during selection.

Skip it if you need a kit for a Polaris RZR 800; CL2 Powersports’ RZR 800 kit is listed for 2008–2014 RZR models instead.

Ranger 800 owners, including those with a listed 6×6, can use this package as a broad engine-rebuild parts source. Check that the year and Ranger configuration match the stated 2008–2017 coverage; images may be generic.

Listed on Amazon as: Complete Engine Motor Rebuild Kit for 2008-2017 Polaris Ranger RGR 800

#3 · Timing Components Included

3. CL2 Powersports Ranger 570 Kit

Best for: Polaris Ranger 570 engine rebuilds.

Why it ranks #3: Fits 2014–2016 Ranger 570 and lists a timing chain, oil pump chain, crankshaft assembly, cylinder, valves, and seals.

CL2 Powersports includes both a timing chain and an oil-pump chain in its kit for 2014–2016 Polaris Ranger 570 models. Those separately listed drive components join a crankshaft assembly, cylinder and pump parts, giving rebuilders a package that addresses more than the piston and gasket work.

The piston and rings, wrist pin and circlips are supplied with a cylinder, while the complete gasket and seal kits cover sealing components. A timing chain and oil-pump chain accompany the oil-pump assembly, bringing timing and lubrication parts together. The crankshaft assembly and bearings add major rotating components; water-pump mechanical seal, valve springs and seals, filters and spark plug round out the listed contents. Fitment is specified for 2014–2016 Ranger 570 models.

Skip it if you need a Ranger 800 kit; CL2 Powersports’ Ranger RGR 800 kit is listed for 2008–2017 Ranger 800 models and 6×6 models.

This suits a Polaris Ranger 570 owner rebuilding a 2014–2016 model and seeking timing, oil-pump, crankshaft and cylinder components in one package. The stated application range is specific, and product images may be generic.

Listed on Amazon as: Complete Engine Rebuild Kit for 2014-2016 Polaris Ranger 570

#4

4. Vertex Kawasaki Teryx Kit

• Weight: 15 lb

Best for: 2013 Kawasaki Teryx 750 rebuilds.

Why it ranks #4: Targets the 2013 Kawasaki KRF 750 Teryx 4×4 and includes crankshaft, piston kit, gaskets, water-pump rebuild kit, and transmission bearings.

Vertex’s WR101-166 is specifically listed for the 2013 Kawasaki KRF 750 Teryx 4×4 and includes crankshaft, piston and water-pump rebuild components. Its parts list also reaches transmission and counter-balancer bearings, enabling a broader rebuild workflow than a kit limited to basic piston and gasket parts.

The piston kit and crankshaft are paired with main bearings and seals, addressing core rotating-assembly needs, while the complete gasket and oil-seal set supports reassembly. A water-pump rebuild kit, transmission bearings and counter-balancer bearings extend the package into related systems. The listing says it meets or exceeds OEM fit and performance specifications and provides one-year warranty coverage. Fitment is narrowly stated for the 2013 KRF 750 Teryx 4×4, so that application boundary is central.

Skip it if you need a Yamaha YZ 85 rebuild kit; Vertex WR101-089 is listed for 2002–2016 YZ 85 models.

A 2013 Kawasaki KRF 750 Teryx 4×4 owner seeking crankshaft, piston, bearing and water-pump parts together is the intended buyer. The stated fitment is specific to that year and model, so it is not a general Teryx kit.

Listed on Amazon as: Complete Engine Rebuild Kit For Kawasaki KRF 750 Teryx 4×4 13 WR101-166

#5

5. ATVWorks Kawasaki Mule Kit

Best for: Kawasaki Mule KAF620 rebuilders.

Why it ranks #5: Fits Kawasaki Mule KAF620 and lists pistons, rings, camshaft, water pump, oil pump, connecting rods, and bearings for a broad rebuild.

The ATVWorks kit combines pistons, rings, a camshaft, water-pump components and an oil pump in one Kawasaki Mule KAF620 package. That breadth can help a rebuilder gather major engine parts together rather than sourcing each listed component separately, with gaskets, bearings and connecting rods also included in the title and supplied parts list.

Two piston sets and two ring sets are included, alongside pins and clips, giving the kit multiple specified reciprocating components for the rebuild. The gasket and seal kit, plane bearings, camshaft and spur gear extend the parts selection beyond pistons. A water pump and thermostat are also listed, while the oil pump is named in the title; this mix supports a broad parts-gathering workflow, though the supplied description truncates the full contents list.

Skip it if you need a fully enumerated contents list before ordering; the supplied description ends mid-list, unlike the named component lists for CL2 Powersports kits.

A Kawasaki Mule KAF620 owner planning a broad engine rebuild may value this kit’s pistons, rings, gaskets, camshaft and bearing coverage. The supplied description is truncated, so buyers who need every included component spelled out should account for that limitation.

Listed on Amazon as: Complete Engine Rebuild Kit Compatible with Kawasaki Mule KAF620 Includes Gaskets, Pistons, Rings, Camshaft, Water Pump, Connecting Rods, Oil Pump, Bearings

#6 · Two-Cylinder Kohler Kit

6. Lil Red Barn Kohler Kit

Best for: Kohler 83mm twin-cylinder rebuilds.

Why it ranks #6: For Kohler 83mm twin-cylinder engines, it includes two pistons, matched ring sets, connecting rods, valves, and a complete gasket set.

Matched rings arrive with the two 83mm standard pistons, so buyers do not need to distinguish between the listed 1.2mm and 1.5mm ring-groove styles. Lil Red Barn’s kit also combines connecting rods, valves and sealing components for Kohler 83mm twin-cylinder engine rebuilds.

Two pistons with wrist pins and clips are supplied with two matched ring sets, simplifying the ring-selection step described in the listing. Two connecting rods, intake and exhaust valves, and a complete gasket set add bottom- and top-end components. The package also includes two crankshaft seals and crankcase sealer. It is not a fully all-inclusive engine kit: bearings, camshaft and lifters are specifically excluded, which matters when planning the full parts order.

Skip it if you need bearings, a camshaft or lifters in the same package; Vertex’s Kawasaki KRF 750 kit lists main bearings and counter-balancer bearings.

This fits a Kohler 83mm twin-cylinder rebuild where matched piston rings and the listed rods, valves and seals suit the job. Plan separately for bearings, camshaft and lifters, which this kit expressly leaves out.

Listed on Amazon as: Complete Kohler Engine Rebuild Kit 83mm CH25 CH730 KT740 Rods

#7

7. DNJ EK1169M 3.6L Kit

• Weight: 24.3 lb

Best for: 3.6L V6 multi-brand rebuilds.

Why it ranks #7: Covers specified 3.6L V6 applications and includes head and lower gasket sets, pistons, bearings, oil pump, timing kit, and thrust washer.

DNJ’s EK1169M covers a notably broad vehicle range, listing 2011–2022 Chrysler, Dodge, Jeep, Ram and Volkswagen applications with the 3.6L V6. Its master-kit contents include gasket sets, bearings, an oil pump and a timing-chain kit, enabling a consolidated parts plan for the specified engine family.

The head and lower gasket sets are paired with main and rod bearings, piston and ring sets, and a thrust washer, covering several core rebuild needs in one kit. An oil pump and timing-chain kit add lubrication and timing components to the package. The stated fitment spans multiple brands and models, but the listing also specifies no VVT cam gears; buyers should use the exact engine and application notes when selecting among those vehicles.

Skip it if you need VVT cam gears included; DNJ EK3172EM lists a different 5.3L V8 application and its own cam-bearing configurations.

Consider this kit for a rebuild of a listed 3.6L V6 application when its gasket, bearing, piston, oil-pump and timing contents match the job. The stated no-VVT-cam-gear configuration is a key boundary.

Listed on Amazon as: DNJ EK1169M Master Engine Rebuild Kit for 2011-2022 Chrysler, Dodge, Jeep, Ram, Volkswagen 1500, 1500 Classic, 200 3.6L V6 24V DOHC 3604cc

#8

8. DNJ EK3172EM 5.3L Kit

• Weight: 22.2 lb

Best for: 2005–2006 GM 5.3L V8 rebuilds.

Why it ranks #8: Fits listed 2005–2006 5.3L V8 applications and adds cam bearings and brass freeze plugs alongside pistons, bearings, gaskets, and oil pump.

DNJ’s EK3172EM combines a brass freeze-plug set and cam bearings with the core gasket, piston, ring and bearing components for specified 2005–2006 5.3L V8 applications. That additional hardware broadens the parts list for a rebuild beyond the primary rotating and sealing assemblies.

Head and lower gasket sets are joined by piston and ring sets, main and rod bearings, an oil pump and a timing-chain kit, consolidating several major rebuild systems. The brass freeze-plug set and cam bearings add supporting components to the package. Fitment is listed for named Buick, Chevrolet and GMC models with the 5.3L V8, and the notes distinguish cam-gear and cam-bearing configurations, making those specifications important when choosing the kit.

Skip it if you need a 2011–2012 Ford F-150 3.5L V6 kit; DNJ EK4323M is listed for that application rather than this 5.3L V8.

This is for a rebuilder working on the stated 2005–2006 5.3L V8 applications who wants cam bearings and freeze plugs alongside major engine parts. Match the cam-gear and bearing notes to the engine configuration.

Listed on Amazon as: DNJ EK3172EM Master Engine Rebuild Kit for 2005-2006 Buick Chevrolet GMC Rainier Sierra 1500 Silverado 1500 5.3L V8 16V OHV 5328cc

#9

9. DNJ EK4323M 3.5L Kit

• Weight: 23 lb

Best for: F-150 3.5L standard-size rebuilds.

Why it ranks #9: Fits 2011–2012 Ford F-150 3.5L V6 and includes gaskets, bearings, oil pump, pistons, rings, and timing chain kit.

DNJ’s EK4323M specifies a standard-size master kit for the 2011–2012 Ford F-150 3.5L V6, bringing together gasket sets, bearings, an oil pump and timing-chain components. That combination gives rebuilders a single package for several major engine systems, while the explicit standard-size specification makes the piston sizing boundary clear.

The head and lower gasket sets cover two distinct sealing areas, while main and rod bearing sets address rotating components. A piston set and piston rings are paired with an oil pump and timing-chain kit, helping consolidate parts for the listed 3.5L V6 rebuild. Fitment is limited to 2011–2012 F-150 3.5L V6 24V DOHC applications, and the kit is standard size; the listing notes VVT cam gears are not included.

Skip it if you need oversized pistons or a VVT cam gear; DNJ EK1169M serves listed 3.6L applications, not this F-150 engine.

This suits a rebuilder working on the specified 2011–2012 Ford F-150 3.5L V6 who wants gasket, bearing, oil-pump and timing components together. Its standard-size parts and no-VVT-cam-gear note are important boundaries for selection.

Listed on Amazon as: DNJ EK4323M Master Engine Rebuild Kit for 2011-2012 Ford F-150 3.5L V6 24V DOHC 3496cc

#10

10. Vertex Yamaha YZ 85 Kit

• Weight: 2 lb

Best for: Yamaha YZ 85 crankshaft rebuilds.

Why it ranks #10: Fits 2002–2016 Yamaha YZ 85, but the supplied listing gives fewer specific kit components than other options in this roundup.

Vertex’s WR101-089 is listed for Yamaha YZ 85 bikes from 2002–2016 and includes a Hot Rods heavy-duty, stock-stroke crank assembly. The supplied description also specifies a wrist-pin bearing for two-stroke use and says the crank is factory assembled and trued to OEM specifications.

The stock-stroke crankshaft is described as factory assembled and trued to OEM specifications, which gives rebuilders a ready-assembled crank component rather than a loose assembly task. Its listed wrist-pin bearing is relevant to the two-stroke YZ 85 application, and the description also names Hot Rods main bearings and circlips. The product is identified as a complete engine rebuild kit, but the supplied detail does not enumerate every component, so buyers should not infer a fuller contents list from the title alone.

Skip it if you need a fully itemized contents list before ordering; CL2 Powersports’ Ranger 570 listing names its included engine components.

This suits a Yamaha YZ 85 owner seeking the listed stock-stroke crank and associated two-stroke components across 2002–2016 applications. The title calls it a complete kit, but the supplied description leaves the full contents unspecified.

Listed on Amazon as: Vertex Complete Engine Rebuild Kit for Yamaha YZ 85 2002-2016