Front Left Brake Caliper Assembly 8-98077997-1 8980779970 For ISUZU D-MAX 2012–2017 TFS85 TFS86 — Twin-Piston 45mm, AKEBONO, Without Mount Bracket, OEM-Spec Aftermarket

8-98077997-1 8980779970 Front Left Brake Caliper Assembly for ISUZU D-MAX 2012–2017 TFS85 TFS86 — AKEBONO Twin-Piston 45mm, Without Bracket, Cross-Ref 8-98077-997-0

✅ Product Description

The Front Left Brake Caliper Assembly with OEM references 8-98077997-1 / 8980779970(及关联编号 8-98077-997-0 / 98077997)is a verified replacement brake component for the ISUZU D-MAX 2012+ (TFS85 / TFS86) pickup platform. This is the front left-hand (LH) hydraulic clamping unit that straddles the front brake disc and converts hydraulic pressure from the master cylinder into mechanical force, driving the brake pads against the rotor to decelerate or stop the vehicle.

The caliper is confirmed as a twin-piston (2-piston) design with a 45 mm piston diameter and is part of the AKEBONO brake system used on the D-MAX 2012+ platform. It is supplied without the mounting bracket (“Supplied complete without mount bracket”), meaning the original bracket or a separately sourced bracket is required for installation. The caliper body is manufactured from grey cast iron (Fonte grise / Ferro fundido), with a reference weight of approximately 4.08–4.19 kg depending on the supplier and whether bracket/accessories are included.-1-2-7

• ✅ Position & Configuration Verified: Front Left (LH), 2-piston caliper, ø45 mm piston, AKEBONO brake system, supplied without mount bracket — confirmed by Euro4x4parts for the 8-98077-997-0 equivalent.-1

• ✅ Piston Diameter & Disc Thickness Verified: 45 mm piston diameter, 27 mm brake disc thickness — confirmed by RIDEX REMAN 78B1561R (“Diamètre de piston de cylindre [mm]: 45”, “pour epaisseur de disque de frein [mm]: 27”) and FERODO FCL695699 (“Diámetro del pistón 1: 45 mm”).-2-3

• ✅ Material & Weight Verified: Grey cast iron (Fonte grise / Ferro fundido); weight ~4.08 kg (FERODO, reconditioned, without accessories) / ~4.186 kg (Textar 38305500).-3-7

• ✅ Vehicle Coverage Verified: ISUZU D-MAX 2 (2012→2017), TFS85 (3.0 TD, 2013–2016) and TFS86 (2.5 Biturbo TD, 2012–2016) — confirmed by Euro4x4parts fitment data. Terrain Tamer confirms D-MAX TFS85 (10/2006–6/2020) Front L/H for 8980779970.-1

• ✅ Cross-Reference Density Verified: 8980779970, 98077997, 8-98077-997-0, 8-98077997-1, 8980779971 are consistently grouped as interchangeable/related references across Euro4x4parts, Brembo, FERODO, RIDEX, Textar, and multiple aftermarket catalogs.-1-2

• ✅ Brake System Verified: AKEBONO — confirmed by Euro4x4parts (“Equipment AKEBONO”) and Textar (“Sistema de travagem Akebono”).-1-7

• ⚠️ Bracket Inclusion Conflict: Euro4x4parts states “without mount bracket”; Textar/brakebook states “com suporte” (with bracket). Confirm bracket inclusion at inquiry — the physical scope differs between supply channels.-1-7

✅ [Failure Symptoms — When to Replace]

• Brake fluid leak at the caliper body or piston seal: Visible wetness or drips around the caliper, often accompanied by a low brake fluid level — indicates a failed piston seal or corroded piston bore.

• Uneven or accelerated brake pad wear: A sticking caliper piston or seized guide pin causes one pad to wear faster than the other, or the inner pad to wear prematurely.

• Vehicle pulls to one side during braking: A seized or dragging caliper on one side applies uneven braking force, causing the vehicle to pull toward the affected side.

• Brake drag / overheating wheel: A caliper that does not release fully keeps the brake pads in contact with the disc, generating excessive heat, a burning smell, and potential wheel bearing damage.

• Spongy or long-travel brake pedal: Air entering the system through a failed caliper seal reduces hydraulic pressure and produces a soft pedal.

• Visible corrosion or pitting on the piston or caliper bore: Direct inspection during pad replacement reveals surface degradation that prevents proper sealing and piston retraction.

⚠️ Consequence of Ignoring Symptoms: A failed front caliper is a direct braking safety hazard. A leaking caliper can lead to loss of hydraulic pressure and extended stopping distances, while a seized caliper can cause brake drag, overheating, and sudden loss of braking on one side. On a loaded D-MAX 2012+, the front calipers should be replaced or rebuilt at the first sign of leakage, drag, or uneven pad wear.

• ✅ Vehicle & Engine Compatibility

  Primary Confirmed Applications:

  
  

  
  

  Brand	Model / Generation	Chassis	Engine	Representative Years	Position
  ISUZU	D-MAX 2 (2012→2017)	TFS85	3.0 TD diesel (179cv)	04/2013 – 2016	Front Left
  ISUZU	D-MAX 2 (2012→2017)	TFS86	2.5 Biturbo TD diesel (161 bhp)	03/2012 – 12/2016	Front Left
  ISUZU	D-MAX (TFS85)	TFS85	—	10/2006 – 6/2020 (Terrain Tamer coverage)	Front L/H

  ⚠️ Important Fitment Notes:

  • Position: This is the front left (LH) caliper. The front right (RH) uses 8-98077-996-0 / 8980779960 (Euro4x4parts confirms the right-side equivalent as 8-98077-996-0). Do not interchange left and right — the caliper body, bleed screw location, and hose fitting orientation differ.-1

  • Piston diameter: 45 mm is the dominant specification across RIDEX, FERODO, Textar, and Brembo data. The 54 mm figure from KAMOKA is an outlier and should not be assumed correct without physical verification. Measure the original caliper or provide the VIN.-30

  • Bracket inclusion: Supply scope varies. Euro4x4parts states without bracket; Textar/brakebook states with bracket. Confirm at inquiry — a caliper without a bracket cannot be installed if the original bracket is damaged.-1-7

  • Model year / platform boundary: This caliper is confirmed for D-MAX 2 (2012+). The D-MAX 1 (2008–2012) uses a different caliper reference (e.g., 8-98006-538-1 / 8-97318677-0, with variant piston diameters). Do not assume interchangeability across the D-MAX 1 / D-MAX 2 boundary without VIN confirmation.

  ✅ Features & Benefits

  
  

  
  

  Feature	Benefit + Verification Signal
  Confirmed Front Left / D-MAX 2012+ fitment	Direct replacement for the front left caliper on the TFS85 / TFS86 platform — verified by Euro4x4parts fitment data and Terrain Tamer coverage.
  Twin-piston 45mm AKEBONO configuration	Matches the original hydraulic and clamping specifications for correct braking balance on the D-MAX 2012+ front axle — verified by RIDEX, FERODO, and Textar technical data.
  Grey cast iron construction	Provides structural rigidity and heat resistance under sustained braking loads — confirmed by RIDEX (“Fonte grise”) and Textar (“Ferro fundido”).
  Dense cross-reference coverage	8-98077-997-0, 98077997, 8980779971 provide multiple verifiable sourcing paths when the primary reference is constrained.
  Broad supplier availability	Brembo, FERODO, RIDEX, Textar, HERTH+BUSS, and multiple aftermarket brands list this reference, indicating established aftermarket support.

  ✅ Quality Control & Verification

  
  

  
  

  QC Item	Verification Method
  Caliper body integrity	Visual and dye-penetrant inspection for cracks, porosity, or corrosion
  Piston bore diameter	Precision gauge — verify 45 mm (confirm against original unit; do not rely on 54 mm outlier)
  Piston seal and dust boot condition	Visual inspection for cracks, tears, or improper seating
  Bleed screw function	Operational verification for smooth opening and sealing
  Guide pin / slide pin condition	Dimensional and visual inspection for wear or corrosion
  Bracket inclusion	Verify whether the package includes a mounting bracket — scope varies by supplier
  Position confirmation	Verify Front Left (LH) configuration — bleed screw and hose fitting orientation must match
  Reference marking	Verify 8-98077997-1 / 8980779970 or 8-98077-997-0 legibility where present

  Because this caliper exists across multiple piston-diameter records and bracket-inclusion configurations, confirming the physical form, piston bore, and package scope on the first sample is mandatory before bulk commitment.

  ✅ Installation & Maintenance Recommendations

  ⚠️ IMPORTANT: Brake caliper replacement is a safety-critical repair. The caliper operates under high hydraulic pressure and must be torqued to exact specifications. A brake system bleed is mandatory after installation. Always refer to the ISUZU D-MAX workshop manual for the specific model. Improper installation can result in brake failure and serious injury.

  Installation Guidelines (Reference Only):

  1. Confirm the required part first: Verify that the original caliper is the front left unit and that the vehicle is a D-MAX 2012+ (TFS85/TFS86). Measure the original piston diameter (45 mm expected) and confirm whether a mounting bracket is required.

  2. Safety first: Park on level ground, engage the parking brake, and chock the rear wheels. Loosen the front wheel lug nuts before raising the vehicle. Support the front corner securely on jack stands.

  3. Disconnect the brake hose: Place a drain pan underneath, disconnect the brake hose from the caliper, and plug the hose immediately to prevent contamination and fluid loss. The FERODO reference lists the thread as M10×1.-3

  4. Remove the caliper: Remove the mounting bolts (or slide pins) securing the caliper to the bracket. Support the caliper weight to avoid stressing the hose.

  5. Inspect the bracket and slide pins: With the caliper removed, inspect the mounting bracket and slide pins for wear, corrosion, or elongation. Replace if damaged — a worn bracket will cause uneven pad wear and caliper drag.

  6. Install the new caliper: Position the 8-98077997-1 caliper onto the bracket (or install the bracket if included). Install the mounting bolts or slide pins and torque to the workshop manual specification. Do not over-torque — the caliper body can distort.

  7. Reconnect the brake hose: Connect the hose to the caliper and tighten the banjo bolt or flare nut to specification. Use new copper washers where applicable.

  8. Bleed the brake system: Fill the reservoir with DOT 3 or DOT 4 brake fluid and bleed the front circuit until clear, bubble-free fluid flows from the caliper bleeder screw.

  9. Check for leaks and pedal feel: Pump the brake pedal to seat the pads and check for leaks at the hose connection and bleeder screw. The pedal should be firm and should not sink under sustained pressure.

  10. Road test: Test drive at low speed, checking for even braking, no pull, and absence of drag or abnormal noise before returning the vehicle to service.

  Maintenance Schedule:

  • Inspect the caliper and brake pads at every service or every 20,000–30,000 km — check for leaks, piston seizure, and even pad wear.

  • Lubricate the slide pins with high-temperature brake grease at every pad replacement — dry or corroded pins are a leading cause of caliper drag.

  • Replace the brake fluid every 2 years or according to the ISUZU schedule — degraded fluid accelerates caliper piston seal wear.

  • Inspect the caliper dust boots for cracks or tears — a compromised boot allows water and dirt to enter the piston bore, causing corrosion and leakage.

  ✅ Packaging & Supply

  • Standard packing: Neutral carton or customer-requested packaging.

  • Package contents: 1 × Front Left Brake Caliper Assembly . Mounting bracket inclusion varies by supplier — confirm at inquiry. Brake pads, slide pins, brake hose, and brake fluid are not included unless explicitly stated.

  • Set options: Caliper only (without bracket) / caliper + bracket kit (subject to availability) — specify at inquiry.

  • Suitable for: ISUZU D-MAX 2012+ brake system repair shops, light commercial fleet maintenance departments, spare parts distributors, and export wholesalers serving Southeast Asia, the Middle East, Africa, and Latin America.

  • Related parts available: Front right caliper (8-98077-996-0), brake pads, brake discs (Ø? — confirm disc dimensions), caliper repair kits, slide pins, and brake fluid for the D-MAX 2012+ platform.