Rx8 Rotor Parts

We prefer the side seals Mazda offers which are longer, and require hand fitting so that you can attain a more accurate fit between side seal and corner seal which allows for maximum compression and no blow by. Every rotor is different so it is better to get them longer to custom fit each slot, these are also cheaper than the pre-cut letter versions.

You will need to remove approximately 0.05" (1.28mm) from each side seal.

One uncut Rx8 Side Seal. Order the Quantity you need.

1 Engine takes 12 Side Seals

One factory Mazda OEM 04-11 Mazda Rx8 Apex Seal & Tip

6 are required per engine

One Mazda OEM 04-11 Rx8 Corner Seal & Plug.

12 Needed Per Engine

Fits:
93-95 Mazda Rx7
04-11 Rx8s with manual or high power automatic transmissions.

These have a yellow mark on them.

A rotor bearing press tool is needed to remove and install the bearings.

4 Inner & 4 Outer Rotor O-Rings.

Fits all 10A, 12A, 13B rotary engines from 1969-2011.

Factory Oil Ring Inserts can be found here.

Having problems installing your oil control rings with our viton inserts, see this video to show how it is done.

4 Inner & 4 Outer Metal Oil Control Rings

Works with any mazda rotary engine from 1969-2011.

Note: If you are using these to rebuild an Rx8 renesis engine you may also need a set of Oil Scraper Rings, and Oil Scraper Ring Springs.

N3Z1-11-S10A
8871-23-180

4 Inner & 4 Outer Mazda OEM 69-11 Rotary Oil Ring Spring Set.

Fits all rotary engines from 1969-2011 including R100, Cosmo, Rx2, Rx3, Rx4, Repu, Rx7, & Rx8.

Fits:

• 71-92 Rotary Vehicles - All
• 04-11 Rx8 - Low / Standard power automatics
• 90-95 20B Cosmo

A rotor bearing press tool is needed to remove and install the bearings.

Competition Rotor Bearing has approximately .04" deeper oil grooves and provide approximately .0005" more clearance than stock bearings.

Use on any rotary engine from 1974-1991, and automatic/low power Rx8s.

Detailed images show competition and stock bearing so you can see the difference.

(12) Mazda Corner Seal Springs, will fit any rotors from 1974-2011 Rx7 & Rx8, a nice upgrade from the earlier wire style corner seal springs.

Will fit any 2mm or 3mm applications.

N3H1-11-C24B

One set of Apex seal springs is enough for one 13B 2mm engine.

Six short and six long 2mm apex seal springs for all 86-11 Rx7 and Rx8 engines.

Six Mazda OEM Rx8 Apex Seals, springs not included.

These will not work for earlier 2mm rx7 engines.

These are 2 piece apex seals, the tip is super glued on from Mazda.

Rx8 Metal Oil Scraper Ring Set of 4, enough for one Rx8 engine.

Cut Off, Cut-Off Seal Set

We prefer the side seals Mazda offers which are longer, and require hand fitting so that you can attain a more accurate fit between side seal and corner seal which allows for maximum compression and no blow by. Every rotor is different so it is better to get them longer to custom fit each slot, these are also cheaper than the pre-cut letter versions.

You will need to remove approximately 0.05" (1.28mm) from each side seal.

Consider upgrading these to Cryo Treated Side Seals to allow for better more uniform heat dissipation, because these seals ride directly over the extremely hot exhaust port inside the renesis engine.

Pro Tip: To check actual clearances use 2 springs for accuracy, but only 1 when assembling the engine. 

 (12) Rx8 Side Seal Springs

Enough for 1 engine

Mazda# N3H1-11-C55

Rx8 Oil Scraper Ring Spring Set of 4 Springs, enough for one Rx8 Engine.

Factory Mazda Oil O-Ring Insert Kit.

Fits all rotary engines from 1969-2011

Atkins Aftermarket Viton Oil Control O-Ring Inserts are a better, cheaper alternative.