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1.5L I4 TurboFWDCVTgasturbo
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brakes

Brake Hose - Rear

for 2021 Honda Accord 1.5L I4 Turbo · FWD
Difficulty
Moderate
Time
48 min
Tools
13
Steps
11
Fact-checked. Built from OLP's spec database, then independently fact-checked line by line with every correction applied. Master-tech sign-off by Chris Hackleman is queued. Cross-check torque values against the factory manual, and stop if anything looks unsafe. How our data is made.

Replace the rear brake hose connecting the brake line to the rear caliper, including bleeding the brake system to remove air.

Warnings

⚠️SAFETY-CRITICAL SYSTEM: Brake system failure can cause loss of braking ability, resulting in severe injury or death. If you are uncertain about any step, have this work performed by a qualified professional.
⚠️Never reuse copper crush washers on banjo bolts. Always install new washers to prevent brake fluid leaks.
⚠️Do not allow brake fluid to contact painted surfaces - it will damage the finish. Immediately wash off any spills with water.
⚠️Brake fluid is hygroscopic and absorbs moisture. Use only fresh DOT 3 fluid from a sealed container. Never reuse old brake fluid.
Do not depress the brake pedal while the brake hose is disconnected, as this will introduce air throughout the entire brake system.
The brake fluid reservoir will drop during this procedure. Monitor frequently and maintain fluid level above MIN mark to prevent air entry.

Tools required

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Parts

As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Fluids

  • DOT 3 Brake Fluid — 0.5 qt

Preparation

  1. Park vehicle on level surface and engage parking brake firmly
  2. Place wheel chock in front of one front wheel
  3. Loosen rear wheel lug nuts 1/4 turn while vehicle is on ground
  4. Raise rear of vehicle with floor jack and support securely on jack stands rated for vehicle weight
  5. Remove rear wheel completely
  6. Clean area around brake hose connections, banjo bolt, and caliper with brake cleaner to prevent contamination
  7. Open brake fluid reservoir and verify fluid is at MAX line - have fresh DOT 3 brake fluid ready
  8. Identify brake hose routing from chassis brake line to caliper, noting any mounting brackets

Procedure

  1. 1
    Disconnect brake hose from chassis brake line
    Locate the banjo bolt connection where the flexible brake hose connects to the hard brake line on the chassis. Place shop towels around the connection to catch fluid. Using a 14mm wrench to hold the brake hose fitting steady, use a 10mm flare nut wrench to carefully loosen and remove the banjo bolt. Remove the bolt completely and note the copper crush washers on each side. Immediately plug or cap the hard brake line opening to minimize fluid loss and contamination. Discard the old copper washers.
    Brake fluid will begin draining immediately upon loosening. Have towels ready and work quickly to minimize fluid loss.
    Torque spec
    Brake Hose Banjo Bolt25 Nm (18 lb-ft)
  2. 2
    Remove brake hose from mounting bracket
    Locate the brake hose mounting bracket on the chassis or suspension component. This bracket secures the hose with a clip or bolt. If equipped with a retaining clip, compress or remove the clip to release the hose. If equipped with a bracket bolt, use the appropriate socket to remove it. Carefully pull the brake hose through the bracket, noting its orientation for reinstallation.
    Torque spec
    Brake Hose Bracket10 Nm (7 lb-ft)
  3. 3
    Disconnect brake hose from caliper
    At the rear caliper, locate the banjo bolt connecting the brake hose to the caliper. Place shop towels around the connection. Using a 14mm wrench, loosen and remove the banjo bolt connecting the hose to the caliper. Remove the bolt and note the two copper crush washers. Allow remaining fluid to drain into a catch container. Remove the old brake hose completely from the vehicle. Discard all old copper washers.
    Support the caliper to prevent stress on the parking brake cable during hose removal.
    Torque spec
    Brake Hose Banjo Bolt25 Nm (18 lb-ft)
  4. 4
    Prepare new brake hose assembly
    Remove new brake hose from packaging and verify it matches the old hose in length and fitting configuration. Ensure you have four new copper crush washers total (two for each banjo connection). Check that all fittings are clean and free of debris. Do not remove protective caps from hose ends until immediately before installation to prevent contamination.
    ℹ️Compare new and old hoses side-by-side to verify correct replacement part before installation.
  5. 5
    Install brake hose to caliper
    Remove protective cap from caliper end of new brake hose. Place one new copper crush washer on the banjo fitting, then position the hose to the caliper inlet port. Place the second new copper crush washer on the opposite side. Thread the banjo bolt by hand to ensure proper alignment. Tighten the banjo bolt to specification using a torque wrench. Ensure the hose is positioned so it will not contact suspension components or the wheel during travel.
    ⚠️Verify new copper crush washers are installed on BOTH sides of the banjo fitting. Missing or reused washers will cause brake fluid leaks and brake failure.
    Torque spec
    Brake Hose Banjo Bolt25 Nm (18 lb-ft)
  6. 6
    Route brake hose through mounting bracket
    Route the brake hose through the chassis or suspension mounting bracket, ensuring it follows the same path as the original hose. The hose must not be twisted or kinked. Verify the hose will have adequate clearance from suspension components, drive axle, and wheel throughout full suspension travel. Secure the hose in the bracket using the retaining clip or bracket bolt as applicable, torquing the bolt to specification if equipped.
    Ensure brake hose has no twists along its length. A twisted hose can restrict brake fluid flow or cause premature failure.
    Torque spec
    Brake Hose Bracket10 Nm (7 lb-ft)
  7. 7
    Connect brake hose to chassis brake line
    Remove protective cap from the brake line end of the new hose and the cap from the chassis hard line. Place one new copper crush washer on the hose banjo fitting, align the hose to the hard brake line connection, and place the second new copper washer on the opposite side. Thread the banjo bolt by hand, ensuring proper alignment and that the hose is not twisted. Torque the banjo bolt to specification. Perform a final check that the entire hose routing is correct with no twists or potential contact points.
    ⚠️Double-check that new copper washers are installed on both sides of this banjo connection. This is the second critical seal point.
    Torque spec
    Brake Hose Banjo Bolt25 Nm (18 lb-ft)
  8. 8
    Refill brake fluid reservoir
    Go to the brake fluid reservoir under the hood. Using fresh DOT 3 brake fluid from a sealed container, refill the reservoir to the MAX line. Keep the reservoir filled above the MIN line throughout the bleeding process. Never allow the reservoir to run dry or air will enter the master cylinder.
    Only use fresh DOT 3 brake fluid from a newly opened container. Contaminated or old fluid can cause brake system damage.
  9. 9
    Bleed rear brake caliper
    Locate the bleeder screw on the rear caliper (typically on top of caliper body). Attach clear vinyl tubing to the bleeder screw and place the other end in a catch bottle partially filled with clean brake fluid. Have an assistant slowly depress the brake pedal and hold it down. Open the bleeder screw 1/2 to 3/4 turn using the bleeder wrench. Observe fluid and air bubbles flowing through the clear tubing. When flow stops, close the bleeder screw while pedal is still depressed. Have assistant release pedal slowly. Repeat this process until no air bubbles appear in the clear tubing and only clean fluid flows. Check reservoir level frequently and top up as needed. Tighten bleeder screw to specification on final close.
    ⚠️Never allow brake fluid reservoir to drop below MIN line during bleeding. This will introduce air into the master cylinder and ABS system, requiring extensive additional bleeding.
    Assistant must not release brake pedal while bleeder screw is open, as this will draw air back into the caliper.
    Torque spec
    Bleeder Screw13 Nm (10 lb-ft)
  10. 10
    Verify brake pedal feel and inspect for leaks
    With engine off, pump brake pedal several times until firm resistance is felt. Pedal should become firm within 3-4 pumps and hold steady when depressed. If pedal feels spongy or sinks slowly, repeat bleeding procedure. Inspect all three connection points (both banjo bolts and bracket) for any signs of brake fluid leakage. Wipe connections clean and observe for fresh fluid seepage. If any leaks are present, do not operate vehicle - check torque values and copper washer installation.
    ⚠️Do not operate vehicle if brake pedal is spongy, travels too far, or if any brake fluid leaks are visible. Resolve all issues before driving.
  11. 11
    Reinstall wheel and lower vehicle
    Clean wheel mounting surface on hub. Reinstall rear wheel, threading lug nuts by hand to prevent cross-threading. Tighten lug nuts in star pattern to snug. Lower vehicle until tire just contacts ground but weight is still on jack stands. Torque lug nuts to specification in star pattern. Fully lower vehicle and remove jack stands. Perform final lug nut torque check in star pattern.
    Torque spec
    Wheel Lug Nuts108 Nm (80 lb-ft)

Reassembly

  1. Verify brake fluid reservoir is at MAX level with fresh DOT 3 fluid
  2. Wipe all brake component surfaces clean of spilled brake fluid and spray with brake cleaner
  3. Double-check all three connection points for proper torque and no leaks
  4. Ensure brake hose has no twists and adequate clearance from all moving components
  5. If opposite side brake hose is of similar age/condition, consider replacing it preventatively to avoid future issues

Verification

  • With vehicle parked and engine off, pump brake pedal 5-6 times - pedal should be firm and not sink
  • Start engine (power brakes active) and verify pedal remains firm with moderate pressure applied
  • Visually inspect all brake hose connections for any fluid seepage or wetness
  • Test drive vehicle in safe area at low speed, verifying normal brake operation and firm pedal feel
  • Perform several moderate brake applications, then re-inspect all connections for leaks
  • After test drive, recheck brake fluid level and top off to MAX if needed
  • Verify no brake warning lights are illuminated on instrument cluster
  • Schedule a follow-up inspection after 50-100 miles to recheck torque and verify no leaks have developed

Related trouble codes on this vehicle

Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.

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