New FN5R FS5A-EL 5F27E Transmission Master Repair Kit 5F25EDXTJ for Mazda

This full master repair kit matches Mazda 5-speed automatic transmission models FN5R, FS5A-EL and 5F27E, official OE reference code 5F25EDXTJ. It covers all consumable parts needed for full gearbox overhaul, including friction clutch plates, steel separator plates, all rubber piston seals, oil gaskets, input/output shaft oil seals and snap rings.

Long-term driving leads to worn friction plates, aging oil seals, hardened gaskets and piston seal leakage, which cause gear slipping, harsh shifting, ATF leakage and transmission fault lights. Our complete one-stop rebuild kit eliminates separate purchasing of scattered small parts, greatly shortening repair time for auto shops.

Warm Reminder: This master repair kit only fits Mazda 5-speed FN5R/FS5A-EL/5F27E transmissions, not compatible with 4-speed/6-speed Mazda gearboxes or other brand transmissions. Send full 17-digit VIN code for free compatibility verification before bulk orders to avoid mismatching losses.

1. Full Kit Standard Accessories: High-temperature friction plates, hardened steel reaction plates, all piston O-rings & lip seals, oil pan gasket, valve body separator gasket, input/output axle oil seals, thrust washers, positioning snap rings;
2. Raw Material Strict Screening: Imported high friction coefficient paper for clutch plates, anti-aging nitrile rubber for all seals, wear-resistant steel for separator plates;
3. Dimensional Precision Inspection: Every friction plate, seal and gasket undergoes size tolerance test to match original gearbox mounting standard;
4. High & Low Temperature Aging Test: All rubber seals pass -35℃~140℃ cycle aging test to prevent shrinkage, expansion and oil leakage;
5. Complete Set Counting & Classification: All parts sorted by type with partition foam to avoid loss and mixing;
6. Shockproof Export Packing: Each kit packed with classified foam partition + independent export carton, prevent friction plates bending and tiny seals missing during long ocean transportation.

• One-Stop Full Overhaul Combination, No Separate Parts Procurement Needed

Contains all wearing consumables required for complete FN5R/FS5A-EL/5F27E gearbox disassembly overhaul, repair shops do not need to source scattered small accessories from multiple suppliers.

• High Temperature Resistant Friction Plates, Long Service Life

Adopts high-density inorganic friction paper, stable friction coefficient under long high-load driving, effectively solve gear slipping and overheating failure of Mazda 5-speed gearbox.

• Full Set Anti-Aging Nitrile Seals & Gaskets

All oil seals, piston seals and gaskets use oil-resistant nitrile rubber, avoid early hardening, swelling and ATF leakage under long-term ATF soaking.

• 1:1 OEM Dimension Standard, Direct Plug-and-Play Installation

Friction plate thickness, seal inner/outer diameter, gasket outline fully consistent with original factory parts, no trimming or modification required during repair.

• Flexible Wholesale & Customization Support

1 set minimum trial order, tiered volume discount, neutral blank carton packaging and custom brand/OE number printing service available.

1. Lift vehicle, fully drain old ATF fluid, remove oil pan, valve body and transmission auxiliary brackets;
2. Fully disassemble internal clutch drum groups, take out worn friction plates, steel plates and aged piston seals;
3. Thoroughly clean all clutch drums, valve body oil passages and mounting planes, wipe metal sludge and residual old sealant completely;
4. Replace all worn parts one by one with brand-new accessories from this kit in factory specified assembly sequence;
5. Install new oil pan gasket and input/output shaft oil seals, refill dedicated Mazda automatic transmission fluid, clear ECU fault codes and conduct full road test to confirm smooth shifting without slipping or oil leakage.

Our factory specializes in full transmission master repair rebuild kits for Japanese brands including Mazda, Toyota, Honda and Nissan, covering FN5R, FS5A-EL, U760E, JF011E, DPS6 series overhaul kits, friction plate sets, seal gasket sets and single clutch components. We own independent raw material testing lab and automatic parts sorting workshop, supply complete overhaul kits to global Japanese car aftermarket wholesalers, with factory direct competitive price and dedicated professional technical after-sales support.

Q1: Does this FN5R master repair kit only fit Mazda FN5R/FS5A-EL/5F27E 5-speed transmissions? Can overhaul parts for Mazda 6-speed / 4-speed gearboxes be directly mixed and used interchangeably?

A1: This full overhaul kit is exclusively designed for Mazda three types of 5-speed automatic transmissions FN5R, FS5A-EL and 5F27E. It cannot be interchanged with 4-speed or 6-speed Mazda gearbox repair kits. Their friction plate outer diameters, seal sizes, steel plate thickness and internal clutch stack height have big differences. Mixing installation will cause slipping, oil leakage and permanent gearbox damage, so separate stocking is required.

Q2: FN5R gearboxes were mass-produced in batches from 2004 to 2015. Do early original valve body versions and later revised gearbox housings share fully compatible friction plate thickness and oil seal sizes, meaning no separate inventory classification is needed?

A2: Yes, our FN5R master repair kit fits all 2004-2015 batch gearboxes. The upgrades of late revised units only optimized internal valve body hydraulic logic, while friction plate thickness, outer diameter, all piston oil seals and shaft seal dimensions remain identical. You only need to stock one single kit to cover all production years, simplifying warehouse management and cutting your stocking capital cost.

Q3: US-spec, Southeast Asian and Middle East export Mazda vehicles have different factory TCU hydraulic calibrations. Does this overhaul kit fit all overseas export versions without sorting by program for stock management?

A3: Absolutely yes. Regional TCU software differences only affect shift logic, while all physical parts in this FN5R kit including friction plates, steel plates and various oil seals maintain unified OEM dimensions. No need to separate inventory for different market versions. One single kit can cover all export Mazda models equipped with FN5R, greatly lowering your warehousing pressure and capital occupation.