If you’re here, chances are you own one of BMW’s most talked-about machines — the 2007 BMW 335i. You know, the one with the kind of acceleration that makes you grin and the kind of repair bills that make you cry. Welcome to the world of the N54B30 twin-turbo inline-six — a powerplant both loved and feared by enthusiasts.

When it’s running right, the N54 is pure joy. Smooth inline-six sound, twin-turbo torque from down low, and endless tuning potential. But when it decides to take early retirement? Well, that’s where TurboAutoParts comes in — with tested, high-quality used 2007 BMW 335i engines for sale and matching transmissions shipped anywhere in the USA.

Meet the Heart of the Beast – N54B30 Engine Specs

The 2007 BMW 335i marked the debut of the N54B30, a direct-injected, twin-turbo inline-six that changed the game for BMW performance sedans and coupes.

Engine Details:

  • Engine Code: N54B30

  • Displacement: 3.0L (2979 cc)

  • Configuration: Inline-6, DOHC, twin-turbocharged

  • Horsepower: 300 HP @ 5,800 rpm

  • Torque: 300 lb-ft @ 1,400–5,000 rpm

  • Fuel System: Direct Injection

  • Block/Head: Aluminum

  • Valvetrain: Double VANOS with hydraulic lifters

Why do enthusiasts still love the N54? Because with a tune, downpipes, and a decent intercooler, you can easily push 400+ HP without touching the internals.

Why do mechanics sometimes hate it? Well, two words: carbon buildup. And also high-pressure fuel pump failures. And wastegate rattle. But hey, no one’s perfect.

Transmission Options for the 2007 BMW 335i

If your engine is toast, your transmission might not be far behind. BMW gave the 335i two main gearbox options in 2007:

  • Getrag GS6-53BZ – 6-speed manual (for the purists)

  • ZF 6HP21 – 6-speed automatic (smooth and strong when maintained)

At TurboAutoParts, we stock used BMW transmissions alongside engines, tested for smooth shifting, proper pressures, and no unwanted noises. Because nothing ruins the thrill of a fresh engine like a gearbox that’s had enough of your shenanigans.

Why a Used BMW Engine is the Smart Play

Let’s talk money.

  • Brand-New N54 from BMW: $10,000–$14,000 (plus labor, plus tears)

  • Used N54 from TurboAutoParts: $3,500–$5,000 (tested, inspected, ready to install)

That’s a lot of cash saved — enough to also replace your turbos, upgrade your intercooler, and still have money for a weekend road trip.

Popular BMW Models We Stock Engines For

While the 2007 335i is a star in its own right, we also carry engines for other BMW legends:

  • 2008 BMW 135i – Same N54B30 magic in a lighter chassis.

  • 2011 BMW 335is – Beefier turbos and cooling.

  • 2013 BMW X5 xDrive35i – N55B30 successor to the N54.

  • 2015 BMW 535i – N55 smoothness for the luxury crowd.

Our Testing Process – No Guesswork, No Surprises

We’re not some mystery eBay seller. Every engine and transmission at TurboAutoParts is:

  1. Compression Tested – To ensure cylinder health.

  2. Leak Checked – Oil and coolant systems inspected.

  3. Mileage Verified – No surprises about how long it’s been running.

  4. Visually Inspected – No cracks, damage, or stripped threads.

Signs It’s Time to Replace Your N54 Engine or Transmission

For the Engine:

  • Metallic knocking noises

  • Excessive smoke (blue = oil, white = coolant, black = fuel)

  • Constant overheating

  • Oil consumption that makes ExxonMobil smile

For the Transmission:

  • Slipping between gears

  • Harsh or delayed shifts

  • Fluid leaks

  • Warning lights you pretend to ignore

The Sarcastic Truth About BMW Repairs

If you’ve been a BMW owner for more than a year, you’ve heard the jokes:

  • Break My Wallet

  • Bavarian Money Waster

And yes, they’re funny because there’s some truth there. But here’s the secret: with used BMW engines from TurboAutoParts, you can dodge dealership robbery prices and keep driving the car you love — without applying for a second mortgage.

Why BMW Enthusiasts Trust TurboAutoParts

  • 🇺🇸 USA-Based with a Commercial Address – We’re real, and we’re here.

  • 🔧 Fully Tested Engines & Transmissions – We check them before they ever leave the warehouse.

  • 📦 Nationwide Shipping – Fast delivery, freight-packed, insured.

  • 📞 Real Human Support – No bots, just gearheads.

The Math You’ll Brag About Later

Picture this: your N54 dies, BMW quotes $13,500 for a new one. You buy a tested one from us for $4,200. You save $9,300. That’s:

  • New performance tires

  • Turbo upgrades

  • Suspension refresh

  • Track day fees

  • …and enough leftover for premium fuel for months

Other BMW Engines We Carry

If you ever upgrade or switch rides, we’ve got you covered:

  • N20B20 – 2.0L Turbo Inline-4 (328i, 528i)

  • N55B30 – 3.0L Turbo I6 (335i, 535i, X5)

  • B58B30 – 3.0L Turbo I6 (340i, 540i, Z4)

  • S65B40 – 4.0L V8 (M3 E92)

Final Thought – Keep the Boost Alive

The 2007 BMW 335i is a modern classic — fast, fun, and full of character. Don’t let a dead N54 keep it in the garage. With a tested used engine or transmission from TurboAutoParts, you can keep the boost, the speed, and the fun alive — without draining your bank account.

👉 Visit TurboAutoParts.com
Buy smart. Drive hard. Spend less.