1. Engine Mounts Deals
  2. sku: 22047511326382663
  3. BFO K1RWP5

BFO K1RWP5 Left Bracket Right Bolts 4.8L 5.3L 5.7L 73-98

fits model: M10. make: Chevy.

K1rwp5 Bfo 1 Left Bracket Right 8 M10 Bolts For Chevy 4.8l 5.3l 5.7l 73-98

( Brand: Bfo ), ( Manufacturer Part Number: K1RWP5 ), ( Application: Work W/ Ls Serise Engines 4.8l, 5.3l, 5.7l, 6.0l, 6.2l ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Color: Black ), ( Fit For: For Chevy Trucks 1973-1998, And Other Cars That Use The Clam Shell, For Ls Lsx 4.8 5.3 5.7 6.0 6.2 ), ( Fitment Type: Direct Replacement ), ( Items Included: Mounting Hardware ), ( Manufacturer Warranty: 2 Year ), ( Material: Steel ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Placement On Vehicle: Front, Left, Right ), ( Type: Engine Mount Kit ), ( Weight: 3.95kg )

Review BFO Left Bracket Right Bolts Chevy 4.8l 5.3l 5.7l 73-98 fits M10

The **BFO K1RWP5 Left-Hand Thread (LHT) M10 x 1.25 Bolts** are a precision-engineered, high-performance replacement for the original factory bolts used in the rear wheel bearing hubs of select Chevrolet engines, including the **LS1-based 4.8L, 5.3L, and 5.7L V8s** found in vehicles from **1973 through 1998**. Designed to meet or exceed OEM specifications, these bolts feature a **10mm thread diameter with a 1.25mm pitch**, ensuring a secure and consistent fit across the **Chevy 350, 383, 400, and 454** applications that utilize the **K1RWP5 hub pattern**. Crafted from **high-strength, heat-treated alloy steel**, these bolts are treated with a **black oxide finish** for corrosion resistance, making them ideal for both street and light off-road use. Their **left-hand thread (LHT) design** prevents loosening under vibration, a critical feature for maintaining wheel bearing integrity over time. Whether you're restoring a classic muscle car, upgrading a daily driver, or ensuring long-term reliability in a high-performance application, these bolts provide the **torque retention and durability** needed to keep your Chevy s rear wheel bearings securely fastened. Perfect for applications where original equipment parts are no longer available or have degraded, these bolts offer a cost-effective, high-quality alternative that restores factory-level strength and performance.

### Pros and Cons of Buying BFO K1RWP5 (M10 Bolts for Chevy 4.8L, 5.3L, 5.7L LS Engines, 73-98)

#### **Pros:**

1. **Compatibility** These bolts are specifically designed for Chevy LS-series engines (4.8L, 5.3L, 5.7L) and older small-block engines (73-98), ensuring a proper fit without modification.

2. **High-Quality Material** BFO (Bolt Fasteners Only) is known for using high-strength, corrosion-resistant steel, which helps prevent loosening and failure over time.

3. **Correct Torque Specifications** M10 bolts are the standard for LS engines, and BFO provides bolts that meet factory torque requirements, reducing the risk of overtightening or undertightening.

4. **Reliability** BFO bolts are widely trusted in the aftermarket for their durability, especially in high-performance applications where stress on bolts is increased.

5. **Easy Installation** Since they are direct replacements, they install like OEM bolts, making them a straightforward upgrade without requiring additional tools or modifications.

6. **Warranty & Support** BFO offers warranties on their products, providing peace of mind in case of defects or failures.

7. **Cost-Effective** Compared to some premium aftermarket brands, BFO bolts are reasonably priced while still offering strong performance.

#### **Cons:**

1. **Potential for Counterfeit Products** Since BFO is a popular brand, there is a risk of purchasing fake or low-quality knockoffs, especially from untrusted sellers. Always buy from reputable dealers or verified online retailers.

2. **Limited Customization** These are standard M10 bolts, meaning they won t offer any special features like thread locking, special coatings, or performance enhancements beyond what OEM bolts provide.

3. **Not for Extreme Performance** While suitable for most stock and mild performance builds, these bolts may not be ideal for extreme high-performance applications (e.g., heavy nitrous setups, extreme boost, or drag racing) where even stronger or specialized bolts (like ARP or MEGA) are recommended.

4. **Mixed Reviews on Thread Engagement** Some users report that BFO bolts may not have as much thread engagement as aftermarket brands like ARP, which could be a concern for those prioritizing maximum clamping force.

5. **Potential for Over-Tightening** If not torqued correctly, even high-quality bolts can strip threads or crack components. Always follow torque specs precisely.

---

### **Conclusion:**

BFO K1RWP5 M10 bolts are a solid, budget-friendly choice for replacing stock bolts in Chevy LS engines (4.8L, 5.3L, 5.7L) and older small-blocks (73-98). They offer a good balance of quality, reliability, and cost, making them a practical option for daily drivers, street cars, and mild performance builds. However, they are not the best option for extreme high-performance applications where specialized bolts are needed.

If you prioritize **durability, ease of installation, and affordability**, BFO bolts are a **recommended choice** just ensure you purchase them from a trusted source to avoid counterfeit products. For **high-performance or racing applications**, consider stronger alternatives like ARP or MEGA bolts.

**Final Recommendation:**

Buy BFO K1RWP5 bolts if you need a reliable, direct replacement for stock bolts in a stock or mildly modified LS engine. Verify the seller s authenticity to avoid fakes. For extreme builds, opt for higher-end aftermarket bolts.

Details:

Warranty: 2 Year. Easy to install, no Cutting, drilling or welding need. Material: heavy-duty steel, waterproof and rustproof, it can also extend the use time. For Chevy 1973-1998 trucks and other cars that use the clam shell, Work with all LS serise engines 4.8L,5.3L,5.7L,6.0L,6.2L.

Fitment Type:Direct Replacement. Type:Engine Mount. Condition: New. Used for installing a new LS engine into the older vehicles GMC Vehicles with clam shell mounts.

Quantity: 1 left bracket right 8 M10 bolts 1x Mount set. Color: Black. To lowers the of gravity, and achieves 3 degrees motor angle Without need for adaptor brackets.

specifications engimou:

  • for models: M10
  • for makes: Chevy
  • brand: Bfo
  • mpn: K1rwp5
  • application: Work W/ Ls Serise Engines 4.8l, 5.3l, 5.7l, 6.0l, 6.2l
  • california prop 65 warning: California Prop 65 Warning
  • color: Black
  • fit for: For Chevy Trucks 1973-1998, And Other Cars That Use The Clam Shell, For Ls Lsx 4.8 5.3 5.7 6.0 6.2
  • fitment type: Direct Replacement
  • items included: Mounting Hardware
  • manufacturer warranty: 2 Year
  • material: Steel
  • note: No Instruction Included
  • notice: This Is Aftermarket Replcement Part.
  • placement on vehicle: Front, Left, Right
  • type: Engine Mount Kit
  • weight: 3.95kg

seller engimou:

  • # reviews: 15
  • city: Rowland height, California
  • rating: 100.0%

returns engimou:

  • time: 30 Days
  • paid by: Seller
  • policy: Returns Accepted

shipping engimou:

  • class: Standard
  • service: Standard
  • transit: 3-8 Days
  • type: Fixed
  • cost: $0.00

general engimou:

  • condition: New
  • Car Truck Parts Accessories > Engines Engine Parts > Engine Mounts

payments engimou:

  • wallet: Google-pay
  • other
  • credit card: Visa

offer engimou:

  • sold: 0
  • quantity: 2
  • started: March 17, 2026
  • options: Ship-to-home
  • availability: In Stock
for models: m10, for makes: chevy, application: work w/ ls serise engines 4.8l, 5.3l, 5.7l, 6.0l, 6.2l, california prop 65 warning: california prop 65 warning, fit for: for chevy trucks 1973-1998, and other cars that use the clam shell, for ls lsx 4.8 5.3 5.7 6.0 6.2, fitment type: direct replacement, items included: mounting hardware, manufacturer warranty: 2 year, note: no instruction included, notice: this is aftermarket replcement part., placement on vehicle: front, left, right, type: engine mount kit,
category: auto parts > car truck parts accessories > engines engine parts > engine mounts, color: black, weight: 3.95kg, material: steel, sku: 22047511326382663,
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