OPS .21 Nitro Marine Engine 3.5cc Parts *NEXT**DAC*

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Crankcase Bolts DAC and Next In-Board and Out-Board Nitro Standard Head Button Exhaust Gasket (Rubber)
Crankcase BoltsDAC and Next In-Board and Out-Board Nitro Standard Head ButtonExhaust Gasket (Rubber)

Replacement Radical/OPS bolts all 3.5cc and 7.5 marine Nitro Engines 10 per package.

DAC and Next In-Board and Out-Board 3.5cc Nitro Standard Head Button

Replacment red rubber exhaust gasket for all OPS/Radical 3.5cc on-road, off-road and marine Nitro Engines including the Radical 621T, 621P and 628T. OPS/Radical Engines.

$6.99

$18.99

$5.99

OPS DAC Crankshaft OPS DAC Marine .21 OPS Engine Case for 14mm Crankshaft
OPS DAC CrankshaftOPS DAC Marine .21 OPS Engine Case for 14mm Crankshaft

Replacement balanced crankshaft for OPS DAC Out-Board

OPS DAC Marine .21 replacement head

OPS Next Engine case for 14mm crankshafts like the Next On-Road/DAC Out-Board and In-Board Nitro Engines. Engine case does not come with bearings.

$112.90

$24.90

$52.00

OPS Exhaust Nipple 2 Sizes All Pipes OPS Marine .21 DAC Out-Drive Bearings OPS Marine 21 Complete Carburetor
OPS Exhaust Nipple 2 Sizes All PipesOPS Marine .21 DAC Out-Drive BearingsOPS Marine 21 Complete Carburetor

OPS Exhaust Nipple's for OPS Marine, Buggy and On-Road pipes 1pcs per package threaded end. Choose from #2230 small 12.75mm in total length and nipple is 3.90mm at widest point. Large #04019 is 15.15mm in total length and nipple is 4.80mm at...

OPS Marine .21 DAC Out-Drive Bearings 2pcs

Complete .21 carb for marine Next In-Board 21 and DAC Out-Board 21

$3.99

$19.90

$89.00

OPS Marine 21 DAC and Next Turbo Button OPS Marine 21 Header Gasket and Spring OPS Marine 3.5cc Side Exhaust Gasket
OPS Marine 21 DAC and Next Turbo ButtonOPS Marine 21 Header Gasket and SpringOPS Marine 3.5cc Side Exhaust Gasket

OPS Marine 21 DAC and Next Turbo Button

OPS Marine 21 Header Aluminum silver color comes with gasket and spring

OPS Marine 3.5cc Side Exhaust Gasket 1pcs per package

$18.99

$32.65

$1.99

OPS Next/SFB-21B and Marine Next Engines Rear Crankcase Gasket OPS Ceramic Rear Crankcase Bearing 14mm OPS Marine In-Board .21 Exhaust Manifold Aluminum
OPS Next/SFB-21B and Marine Next Engines Rear Crankcase GasketOPS Ceramic Rear Crankcase Bearing 14mmOPS Marine In-Board .21 Exhaust Manifold Aluminum

Rear Crankcase Gasket for all Next Nitro Engines including marine in-boards/marine out-boards and SFV-21B Buggy Engines. If you have the Radical line of engines like 621P and 621T use 573120 1pcs per package

OPS Rear Black Ceramic Bearing for crankcase fits all 3.5cc 14mm cranks. These are the replacement bearings for the NEXT Marine and On-Road Nitro Engines. Bearing is hand made by OPS using the best black ceramic bearings available! Rear crankcase bearing size is 14x25mm . 4x6.

OPS Marine 21 Exhaust Manifold Aluminum Silver Color with silicone coupler. Header is for In-Board 3.5cc Nitro OPS Engines.

$1.99

$40.50

$28.99

Standard Plug Head Button All 3.5cc Engines OPS NEXT/DAC 21 Piston and Sleeve OPS/Radical Engines Carb Cinch Collar
Standard Plug Head Button All 3.5cc EnginesOPS NEXT/DAC 21 Piston and SleeveOPS/Radical Engines Carb Cinch Collar

OPS standard plug head button for all .21 size engines including the Next Marine and On-Road new engines. This standard cylinder head button allows the racer to fine tune the engine to their glow plug preference by offering an optional standard...

OPS Marine/On-Road NEXT/DAC 21 Piston and Sleeve. Check out the porting 7+2. This piston and sleeve is replacement for Next 21 On-Road and Marine Nitro Engines

OPS/Radical and OPS Marine engine cinch collar with allen wrench. Hold's carburetor to block. Includes stainless steel collar, orings, bolt and wrench.

$29.00

$107.70

$5.99

OPS Glow Plug Hot or Cold Standard Plug Type OPS .21 Marine 3.5cc Connecting Rod OPS .21 Wrist Pins Clips
OPS Glow Plug Hot or Cold Standard Plug TypeOPS .21 Marine 3.5cc Connecting Rod OPS .21 Wrist Pins Clips

OPS Glow Plug Hot C5 or Cold C6 Standard Plug Type Best for all bikes, buggies and Marine Engines. Made in Italy by OPS best standard plug on the market. Choose below Cold or Hot Plugs.

Now's the time to change that rod guys. Save you $$'s in the end. Connecting Rod for the Marine .21 with 6 hole cylinder head bolt pattern.

Wrist pins eclips for your Radicals and OPS .21's including marine 3.5. Package 2pcs.

$6.90

$38.00

$2.99

OPS Front Crankcase Bearing 3.5cc Replacement Piston and Sleeve Marine .21 3.5cc Wrist Pin and 2pcs Clips
OPS Front Crankcase Bearing 3.5ccReplacement Piston and Sleeve Marine .21 3.5ccWrist Pin and 2pcs Clips

Replacement Front Crankcase Bearing for OPS .21 Marine 3.5cc Nitro Engine. Size is 19X7X6.

Factory modified replacement Piston and Sleeve for the Radical 621P. Power version of the 621 product line. Note the differant porting then the 621T for torque engine.Replacement wrist pin and clips for Marine .21 Nitro Engine 3.5cc. Includes one pin and two clips.

$19.30

$114.60

$9.25

OPS WORLD CHAMPION ENGINES!